Fasteners Manufacturer in India, Industrial Bolts and Nuts Types

Industrial Bolts and Nuts Supplier in Mumbai Since 2002 in Various Types

Bolts and Nuts Types

Top Bolts and Nuts Supplier in India in Various Types With Unmatch Range Of Sizes

Bolts Types	Nuts Types
Anchor Bolt Arbor Bolts Blind Bolts Carriage Bolt Elevator Bolts Eyebolt Flange Bolts Hex Bolt J-Bolts Lag Bolts Machine Bolt Hanger Bolts	Cap Nuts Hex Nuts Jam Nuts Lock Nuts Coupling Nut Square Nut Wing Nut T-Nut Acorn Nut Cap Nut Flange Nut Coupling Nut

Bolts and Nuts

Screw

Rivet

Table of Content

Fasteners Grades Available At Siddhagiri
Fasteners Material Grade Chart
Steel Fasteners Specification
Screw Thread Type
High Tensile Fasteners Price List
Rivet Head Type
Stud Bolt Weight Chart
Aerospace Fasteners Documentation
Automotive Fasteners Types
Threaded Rod Surface Coating
Industrial Fasteners Galvanizing Process
Nut Bolt Size Chart
Point to Consider When Selecting Fasteners and Bolts

Industries That Completely Depend on Nuts and Bolts
Bolt Torque Chart
Custom Fasteners Standards
Tips to Find Best Fasteners Manufacturer in India
Allen Bolt HSN Code
Anchor Bolt Torque Calculation
Why Choose Siddhagiri For Screw and Bolt ?
Belleville Washer vs Spring Washer
Self Drilling Screw Uses
Customized Fasteners Forging Process
Bolts and Screws Heat Treatment Process
What Fastener Challenges Do Mechanical Engineers Face?

As Industrial Fasteners Manufacturer in India, Produce Customized Self Drilling and Drywall Screw In Different Grades of Materials

Fasteners Grades Available At Siddhagiri

Fasteners Material Grade Chart

Metric Bolts
Marking On Head	Class and Material	Nominal Size (mm)	Mechanical Properties
Marking On Head	Class and Material	Nominal Size (mm)	Yield Strength Min. (MPa)	Proof Load (MPa)	Tensile Strength Min. (MPa)
	Class 10.9 Alloy steel, Q & T	5 to 100mm	940	830	1040
	Class 8.8 Medium carbon steel, Q & T	All sizes below 16mm	640	580	800
	Class 8.8 Medium carbon steel, Q & T	16 to 72mm	660	600	830
Usually Stamped A-2 or A-4	A-2 & A-4 Stainless Steel alloy with nickel and chromium	All sizes thru 20mm	210 Min. 450 Typical	N/A	500 Min. 700 Typical
	Class 12.9 Alloy steel, Q & T	1.6 to 100mm	1100	970	1220

US Bolts
Head Marking	Grade and Material	Nominal Size Range (inches)	Mechanical Properties
Head Marking	Grade and Material	Nominal Size Range (inches)	Min. Yield Strength (psi)	Proof Load (psi)	Min. Tensile Strength (psi)
No Markings	Grade 2 Low or medium carbon steel	1/4 to 3/4"	57,000	55,000	74,000
No Markings	Grade 2 Low or medium carbon steel	Over 3/4 to 1-1/2"	36,000	33,000	60,000
	307A Low carbon steel	1/4 to 4"	N/A	N/A	60,000
6 Radial Lines	Grade 8 Medium carbon alloy steel, quenched and tempered	1/4 to 1-1/2"	130,000	120,000	150,000
	651 Silicon bronze An alloy of mostly copper and tin with a small amount of silicon	1/4 to 3/4"	55,000	N/A	70,000
		7/8 to 1-1/2"	40,000	N/A	55,000
3 Radial Lines	Grade 5 Medium carbon steel, quenched and tempered	1/4 to 1"	92,000	85,000	120,000
3 Radial Lines	Grade 5 Medium carbon steel, quenched and tempered	Over 1 to 1-1/2"	81,000	74,000	105,000
Stainless Markings Vary	18-8 & 316 Stainless Steel alloy with chromium and nickel	All sizes thru 1"	20,000 Min. 65,000 Typical	N/A	65,000 Min. 100,000 – 150,000 Typical
	Grade A325 Carbon or alloy steel with or without boron	1/2 to 1-1/2"	92,000	85,000	120,000
	Aluminum 2024 Aluminum alloy with copper, magnesium and manganese; solution heat treated and age hardened	All sizes	36,000	N/A	55,000

Steel Fasteners Specification

World Class Fasteners Manufacturers in India Offering Wide Range of High-quality Nuts, Bolts, Washers, & Custom Fasteners

Standard Sizes

Imperial Sizes : 3/6 to 2"
Metric sizes: M3 to M56
Length: Custom

Bolts Thread

UNC, BSW
METRIC, UNF
BSF etc.

Studs End

Sheared
Chamfer, Flat
Rounded
Saw cut

Screws Head Shape

Round
Pan
Button
Truss

Threaded Rod Thread

Right hand
Left hand
Both right and left etc.

Bolts Neck Type

Knurled
Square
Hex, Triangular

Studs Types

Double-End
Fine/ Fully Threaded
Tap-End

Process

Hot Forging
Cold Forging
CNC machined

Surface Finish

Phosphating
Oxidation
HDG

Screw Tip Style

Rolled
Dog
Die, A pinch

Screw Thread Pitch

Coarse Threads
Fine Threads

Threaded Rod Condition

Threading
Cold Drawn

Application

Automative
Construction
Aerospace
Marine

Origin

Japanese
Indian, Korean
European
American

Screw Thread Type

Screw Threads
Root Pitch Lead Crest Flank External Thread Angle of Thread Right-hand Thread Internal Thread Single-start Thread Left-hand Thread Multi-start Thread Double-start Thread

Offering a Wide Range of Custom Rivet and Stud Bolts At Competitive Rates

High Tensile Fasteners Price List

Metric Series : M02 to M24
Grade : 8.8 and 10.9

Rivet Head Type

Stud Bolt Weight Chart

Length	Stud Bolt Weight in Kilograms
Length	9/16"	7/16"	3/8"	1/2"	3/4"	5/8"	1"	7/8"	1.1/4"	1.1/8"	1.1/2"	1.3/8"
55mm	0.060	0.035	0.026	0.048	0.112	0.076	0.202	0.154	0.326	0.260	0.481	0.399
50mm	0.055	0.032	0.024	0.044	0.103	0.070	0.185	0.141	0.299	0.238	0.441	0.366
65mm	0.070	0.041	0.030	0.056	0.131	0.089	0.235	0.179	0.380	0.303	0.561	0.466
60mm	0.065	0.038	0.028	0.052	0.122	0.083	0.218	0.166	0.353	0.281	0.521	0.432
75mm	0.080	0.047	0.034	0.064	0.150	0.102	0.269	0.205	0.434	0.346	0.641	0.532
70mm	0.075	0.044	0.032	0.060	0.140	0.095	0.252	0.192	0.407	0.325	0.601	0.499
85mm	0.090	0.053	0.039	0.072	0.168	0.114	0.302	0.230	0.489	0.390	0.721	0.599
80mm	0.085	0.050	0.037	0.068	0.159	0.108	0.286	0.218	0.462	0.368	0.681	0.565
90mm	0.095	0.056	0.041	0.076	0.178	0.121	0.316	0.243	0.516	0.411	0.761	0.632
100mm	0.105	0.061	0.045	0.085	0.196	0.133	0.353	0.269	0.570	0.455	0.841	0.698
95mm	0.100	0.059	0.043	0.081	0.187	0.127	0.336	0.256	0.543	0.433	0.801	0.665
105mm	0.110	0.064	0.047	0.089	0.206	0.140	0.370	0.282	0.597	0.476	0.881	0.732
115mm	0.120	0.070	0.052	0.097	0.224	0.152	0.403	0.307	0.652	0.520	0.961	0.798
125mm	0.130	0.076	0.056	0.105	0.243	0.165	0.437	0.333	0.706	0.563	1.041	0.865
110mm	0.115	0.067	0.050	0.093	0.215	0.146	0.386	0.294	0.624	0.498	0.921	0.765
120mm	0.125	0.073	0.054	0.101	0.234	0.159	0.420	0.320	0.679	0.541	1.001	0.831

Delivering Top-quality Automotive and Aerospace Fasteners With NABL Approved Lab Report

Aerospace Fasteners Documentation

NABL approved Laboratory Test Reports
Raw Material Test Reports
Quality Assurance Plan (QAP)
Guarantee Letter
Fumigation Certificates
Material Test Certificates
Packing List

Automotive Fasteners Types

Trusted Manufacturer Of Fasteners in India Delivering Superior Material Strength

Eye Bolts

Flange Bolts

Hanger Bolts

Hex Head Bolts

J Bolts

Shoulder Bolts

Square Head Bolts

U Bolts

Cap Nuts

Castle Nuts

Coupling Nuts

Heavy Hex Nuts

Hex Jam Nuts

Keps K Lock Nuts

Stove Nuts

Wing Nuts

Eye Screws

Hex Lag Screws

Machine Screws

Drywall Screws

Self Drilling Screws

Socket Set Screws

Wood Screws

Threaded Cutting Screws

Fender Washers

Flat Washers

Square Washers

Structural Washers

Studs

Threaded Rod

Dowel Pin

Slotted Spring Dowel Pin

Get Threaded Rod and Anchor Bolt With Various Surface Coating like Hot Dip Galvanizing and PTFE

Check Out Your Nearby Locations For Fastest Deliveries

Tunisia	Houston	Morocco	Kenya	Gabon	Dubai
Oman	Mozambique	Abu Dhabi	South Africa	Nigeria	USA
Al Jubail	Al-khobar	Saudi Arabia	Riyadh	Dammam	UAE
Tanzania	Zambia	Angola	Ethiopia	Egypt	Ghana
Carolina	California	New South Wales	Indiana	Texas	Algeria

Threaded Rod Surface Coating

Hot-dip Galvanizing
Powder Coating
Zinc Electroplate
Zinc-Nickel Plating
Zinc Phosphate & Oil Coating
Cadmium Electroplate
Black Oxide Coating
Zinc Non-Electrolytically Applied Coating

Comparison of Common Surface Coatings
Relative Cost	Coating	Corrosion Resistance (NSS Hours)
9	Cad	72-168
2	Zinc	72-384
1	Phos & Oil	2-72
6	Zi-Ni	1000
12	Zinc Flake	240-1000

Industrial Fasteners Galvanizing Process

Factor	Value
Process Temperature	460°c - sso c
Type of Material	Steel
Hydrogen embrittlement	Descaling With Inhibitor. No Risk Process
Usual Thickness	Individual - 43µm Average - 54µm
Maximum Service Temperature Without Damage of Coating	300°C max
Average Friction Coefficient (without lubricant)	Seizure Risks Average When Bolt Stress IS > 40% YS
(with lubricant)	0.13 - 0.18
Aspect	Matt or Glossy

Nut Bolt Size Chart

Size	Nominal (Major)	Fine Thread (UNF)			Coarse Thread (UNC)
Size	Diameter [in]	Tensile Stress Area [in2]	Threads Per Inch	Minor Area [in2]	Tensile Stress Area [in2]	Threads Per Inch	Minor Area [in2]
#2	0.086	0.0039	64	0.0034	0.0037	56	0.0031
#0	0.06	0.0018	80	0.0015	---	---	---
#4	0.112	0.0066	48	0.0057	0.006	40	0.005
#6	0.138	0.0102	40	0.0087	0.0091	32	0.0075
#5	0.125	0.0083	44	0.0072	0.008	40	0.0067
#8	0.164	0.0147	36	0.0129	0.014	32	0.012
1/4"	0.25	0.0364	28	0.0326	0.0318	20	0.0269
#10	0.19	0.02	32	0.0175	0.0175	24	0.0145
5/16"	0.3125	0.058	24	0.0524	0.0524	18	0.0454
7/16"	0.4375	0.1187	20	0.109	0.1063	14	0.0933
3/8"	0.375	0.0878	24	0.0809	0.0775	16	0.0678
1/2"	0.5	0.1599	20	0.1486	0.1419	13	0.1257
5/8"	0.625	0.256	18	0.24	0.226	11	0.202
1-3/4"	1.75	---	---	---	1.9	5	1.74
9/16"	0.5625	0.203	18	0.189	0.182	12	0.162
3/4"	0.75	0.373	16	0.351	0.334	10	0.302
1"	1	0.663	12	0.625	0.606	8	0.551
7/8"	0.875	0.509	14	0.48	0.462	9	0.419
1-1/8"	1.125	0.856	12	0.812	0.763	7	0.693
1-3/8"	1.375	1.315	12	1.26	1.155	6	1.054
1-1/4"	1.25	1.073	12	1.024	0.969	7	0.89
1-1/2"	1.5	1.581	12	1.521	1.405	6	1.294
2"	2	---	---	---	2.5	4.5	2.3

Point to Consider When Selecting Fasteners and Bolts

Industries That Completely Depend on Nuts and Bolts

Marine
Automotive
Construction
Aerospace
Manufacturing
Oil and Gas Industry
Energy
Mining
Railroad

Bolt Torque Chart

Bolt Size	Proof Load (lbs)	TPI	Clamp Load (lbs)	Tightening Torque (ft lbs)
Bolt Size	Proof Load (lbs)	TPI	Clamp Load (lbs)	Galv+Waxed	Plain	Galv
5⁄16	5,500	18	4,125	11	21	27
1⁄4	3,350	20	2,513	5	10	13
3⁄8	8,150	16	6,113	19	38	48
1⁄2	14,900	13	11,175	47	93	116
7⁄16	11,150	14	8,363	30	61	76
9⁄16	19,100	12	14,325	67	134	168
3⁄4	35,050	10	26,288	164	329	411
5⁄8	23,750	11	17,813	93	186	232
7⁄8	48,500	9	36,375	265	530	663
11⁄8	80,100	7	60,075	563	1,126	1,408
1	63,650	8	47,738	398	796	995
11⁄8	82,934	8	62,201	583	1,166	1,458
11⁄4	105,006	8	78,754	820	1,641	2,051
11⁄4	101,750	7	76,313	795	1,590	1,987
13⁄8	129,492	8	97,119	1,113	2,226	2,782
13⁄8	121,300	6	90,975	1,042	2,085	2,606
11⁄2	156,687	8	117,515	1,469	2,938	3,672
11⁄2	147,550	6	110,663	1,383	2,767	3,458
13⁄4	199,500	5	149,625	2,182	4,364	5,455
2	262,500	41⁄2	196,875	3,281	6,563	8,203
13⁄4	218,400	8	163,800	-	4,778	-
2	290,850	8	218,138	-	7,271	-
21⁄4	341,250	41⁄2	255,938	4,799	9,598	11,997
21⁄2	420,000	4	315,000	6,563	13,125	16,406
21⁄4	373,801	8	280,351	-	10,513	-
21⁄2	466,200	8	349,650	-	14,569	-
23⁄4	515,851	8	386,888	-	17,732	-
23⁄4	468,500	4	351,263	8,050	16,100	20,124
3	567,150	4	425,363	10,634	21,268	26,585
31⁄4	674,500	4	505,875	13,701	27,402	34,252
3	618,451	8	463,838	-	23,192	-
31⁄4	730,550	8	547,913	-	29,679	-
31⁄2	851,201	8	638,401	-	37,240	-
31⁄2	791,350	4	593,513	17,311	34,622	43,277
33⁄4	917700	4	688275	21,509	43,017	53,771
4	1052600	4	789450	26,315	52,630	65,788
33⁄4	982,300	8	736,725	-	46,045	-
4	1,121,950	8	841,463	-	56,098	-

Custom Fasteners Standards

DIN Standard	British Standard	ISO Standard
DIN 125		ISO 7089
DIN 1		ISO 2339
DIN 125		ISO 7090
DIN 127	BS4464B
DIN 126		ISO 7091
DIN 137
DIN 128
DIN 1443		ISO 2340
DIN 1440		ISO 8738
DIN 1470		ISO 8739
DIN 1444		ISO 2341
DIN 1472		ISO 8745
DIN 1471		ISO 8744
DIN 1474		ISO 8741
DIN 1473		ISO 8740
DIN 1475		ISO 8742
DIN 1477		ISO 8747
DIN 1476		ISO 8746
DIN 1481		ISO 8752
DIN 1816
DIN 1587
DIN 316
DIN 315
DIN 404
DIN 427		ISO 2342
DIN 417		ISO 7435
DIN 428		ISO 4034
DIN 433-1		ISO 7092
DIN 433		ISO 7092
DIN 433-2		ISO 7092
DIN 439	BS3692	ISO 4035
DIN 438		ISO 7436
DIN 439	BS3692	ISO 8675
DIN 439	BS3692	ISO 4036
DIN 439-1		ISO 4036
DIN 439-2		ISO 8675
DIN 439-2		ISO 4035
DIN 440		ISO 7094
DIN 439-2		ISO 4035
DIN 462
DIN 444
DIN 464
DIN 467
DIN 466
DIN 471
DIN 5406
DIN 548
DIN 479
DIN 551		ISO 4766
DIN 555		ISO 4034
DIN 553		ISO 7434
DIN 558		ISO 4018
DIN 601		ISO 4016
DIN 580
DIN 603
DIN 6319
DIN 609
DIN 6325		ISO 8734
DIN 6340
DIN 6797
DIN 6798
DIN 653
DIN 6799
DIN 6901		ISO 10510
DIN 6900		ISO 10644
DIN 6903		ISO 10669
DIN 6902		ISO 10673
DIN 6912
DIN 6916
DIN 6914		ISO 14399-4
DIN 7970		ISO 1478
DIN 7972		ISO 1482
DIN 7973		ISO 1483
DIN 7971	BS4174	ISO 1481
DIN 7979		ISO 8735
DIN 7984
DIN 7985	BS4183	ISO 7045
DIN 7980	BS4464A
DIN 84	BS4183	ISO 1207
DIN 7991	BS4168	ISO 10642
DIN 85	BS4183	ISO 1580
DIN 912	BS4168	ISO 4762
DIN 911		ISO 2936
DIN 931-1	BS3692	ISO 4014
DIN 912	BS4168	ISO 21268
DIN 931-2	BS3692	ISO 4014
DIN 934		ISO 4032
DIN 933	BS3692	ISO 4017
DIN 965	BS3692	ISO 7046
DIN 934		ISO 8673
DIN 963	BS3692	ISO 2009
DIN 936	BS3692
DIN 964	BS3692	ISO 2010

Tips to Find Best Fasteners Manufacturer in India

Below Point Should Be Considered to Find Best Industrial Fasteners Manufacturer in India

Allen Bolt HSN Code

Product	HSN Code
Fasteners	7318

Anchor Bolt Torque Calculation

Torque Calculation Formula

M=F* l

Where,

M= Newton meters
F= Force
L=Lever Arm Distance

Why Choose Siddhagiri For Screw and Bolt ?

Belleville Washer vs Spring Washer

Factor	Spring Washer	Belleville Washer
Thickness	0.2mm - 14mm	Usually thicker for a certain OD
Standard Unit	Metric	Imperial/Metric
International Standard	DIN EN 16983 & 16984	DIN 6796
Material	High Carbon Steel Alloy Steel	High Carbon Steel
Application	Preloading, Dynamic loading	Static Applications

Self Drilling Screw Uses

Sheet Metal
Decking
Roofing
Drywall
Medical

Customized Fasteners Forging Process

Step	Process
Wire	Cut to length, uncoiled, and straightened.
Cold forging	Forming the Steel at Room Temperature Into the Desired Shape.
Bolt head	Created by Applying Significant Pressure to Different Dies.
Threading	Cutting or Rolling Creates Threads.
Heat treatment	Extreme Heat is Applied to the Bolt to Harden the Steel.
Surface treatment	The Application Determines This.
Packing	The Bolts Are Packaged After Quality Control

Bolts and Screws Heat Treatment Process

Heat Treatment Process
Process	Heating At Temperature
Annealing	600 to 900°C
Normalizing	850 to 950°C
Quenching	800 to 900°C
Tempering	150to 650°C
Carburizing	900 to 950°C
Nitriding	500 to 550°C
Induction Hardening	800 to 900°C

What Fastener Challenges Do Mechanical Engineers Face?

Fasteners Delivery Time As Per Location

Export to	Delivery Time
Saudi Arabia	7
UAE	5 days
Qatar	7
Kuwait	10
Singapore	8
USA	40-60
Bahrain	9
Oman	5
South Africa	25-30
Italy	30
Malaysia	10
France	30
Indonesia	9
Philippines	14
Uk	30

Additional service : Small quantity | Custom order | hard to find items | Sourcing from other countries

Why Siddhagiri Metals & Tubes ?

PED 2014/68/ EU Approved Manufacturer for Steel Forgings.
Stockist, Wholesaler, Retailer and Trader of Steel Bars, Bolts and Nuts, Machined Components in Nickel Alloys, High Temperature Alloys, Super Alloys
Rank in Top 5 Exporter of Nickel Alloy Forgings in India and 73rd Position in Asia As Per Import and Export data of 2022
Supplying Oil and Gas Piping Products As Per Standard NACE MR0175 / ISO 15156 to the Netherlands, Tunisia, South Africa, Azerbaijan, Saudi Arabia, Alzeria, Morocco and Egypt Since 2002.
India's Largest Importer and Stockholder of Bolting Accessories in Ferrous and Non Ferrous Metals.