alinox Steel

About High Tensile Fasteners

Bolts are fasteners which are externally threaded and are designed for driving holes through the assembled parts. These fasteners can be either tightened or released by torqueing a nut. High Tensile Stud Manufacturer produce these bolts from high strength carbon steel or from tempered alloy steel.

Application

☆ High Tensile Bolts And Nuts uses in Pharmaceuticals
☆ HT U Bolts uses in Spiral Welded tube for burner pipes and flues
☆ HT Anchor Bolts uses in Heat Exchangers
☆ High Tensile Bolts uses in Off-Shore Oil Drilling Companies
☆ High Tensile Nuts uses in Specialty Chemicals
☆ High Tensile Steel Fasteners uses in Aircraft Exhaust
☆ HT Fasteners uses in Power Generation
☆ High Tensile Bolts Fasteners uses in Gas Processing
☆ High Tensile Fasteners uses in Pharmaceutical Equipment
☆ High Tensile Studs uses in Petrochemicals
☆ High Tensile Threaded Rod uses in Sea Water Equipment

High Tensile Fasteners Material

Nominal Size Range (mm)
Class 8.8: Medium carbon steel, quenched and tempered
Class 10.9: Alloy steel, quenched and tempered
Class 12.9: Alloy steel, quenched and tempered

High Tensile Fasteners Specification

High Tensile Fasteners Grades	Grade 10.9, Grade 8.8, DIN 933 Grade 12.9
High Tensile Fasteners Standard	IS 1364 / IS 1363 & DIN EN ISO 4014 & 4017 DIN 931 / 933
High Tensile Fasteners Size	Dia M 20 to 100 mm Inch 3/4" to 3.1/2"
High Tensile Fasteners finish	Zinc plated / Plain / Hot dip galvanised

Mechanical Properties of ASTM A193 B7 Bolts

Grade	Size	Tensile ksi, min	Yield, ksi, min	Elong, %, min	RA % min	HBW	HRC
B7	Up to 2-1/2	125	105	16	50	321 max	35 max
	2-5/8 - 4	115	95	16	50
	4-1/8 - 7	100	75	18	50

ASTM A193 Grade B16 Chemical properties

Property class	Chemical composition
Property class	C.	Mn.	Si.	P.	S.	Cr.	Ni.	Mo.	V.	Ti.
B16	0.36---0.47	0.45---0.70	0.15---0.35	0.035 max.	0.04 max.	0.80---1.15	---	0.50-0.65	0.25-0.35	---

ASTM A320 Grade L7 Stress Rupture Requirements

Tensile Class	Test Temperature °F [°C]	Stress, min		Time to Rupture, min, h [Note]	Elongation, min, %
Tensile Class	Test Temperature °F [°C]	ksi	Mpa	Time to Rupture, min, h [Note]	Elongation, min, %
A, B and C	1200 [650]	56	385	100	5
D	1200 [650]	40	275	100	5

**All measurements in millimeters**

DIA	M4	M5	M6	M8	M10	M12	M14	M16	M18	M20	M22	M24	M27	M30	M33	M36	M39	M42	M45	M48	M52
Pitch	0.7	0.8	1	1.25	1.5	1.75	2		2.5			3		3.5		4		4.5		5
Grade A upto length	40	50	60	80	100	120	140	150					Grade A not applicable to these dia’s
Head Across Flat (S) Nom = Max Min Grade A Grade B	7	8	10	13	16	18	21	24	27	30	34	36	41	46	50	55	60	65	70	75	80
	6.78	7.78	9.78	12.73	15.73	17.73	20.67	23.67	26.67	29.67	33.38	35.38	Grade A not applicable to these dia’s
	6.64	7.64	9.64	12.57	15.57	17.57	20.16	23.16	26.16	29.16	33	35	40	45	49	53.8	58.8	63.1	68.1	73.1	78.1
Head Height (K) Nom Tol + or – Grade A Grade B	2.8	3.5	4	5.3	6.4	7.5	8.8	10	11.5	12.5	14	15	17	18.7	21	22.5	25	26	28	30	33
	0.125	0.15			0.18				0.215				Grade A not applicable to these dia’s
	0.2	0.24			0.29				0.35					0.42							0.5
Across corners e Min Grade A Grade B	7.66	8.79	11.05	14.38	17.77	20.03	23.36	26.75	30.14	33.53	37.72	39.98	Grade A not applicable to these dia’s
Across corners e Min Grade A Grade B	7.5	8.63	10.89	14.2	17.59	19.85	22.78	26.17	29.56	32.95	37.29	39.55	45.2	50.85	55.37	60.79	66.44	71.3	76.95	82.6	88.25
Thread Length (b) For lengths < or = 125mm For lengths > 125mm <= 200mm For lengths > 200mm	14	16	18	22	26	30	34	38	42	46	50	54	60	66	Not specified as full thread recommended
	20	22	24	28	32	36	40	44	48	52	56	60	66	72	78	84	90	96	102	108	116
	33	35	37	41	45	49	53	57	61	65	69	73	79	85	91	97	103	109	115	121	129
Major Dia at thread (min)	3.838	4.826	5.794	7.76	9.732	11.701	13.682	15.682	17.623	19.623	21.623	23.577	26.577	29.522	32.522	35.465	38.465	41.437	44.437	47.399	51.399
Major Dia at thread (max)	3.978	4.976	5.974	7.972	9.968	11.966	13.962	15.962	17.958	19.958	21.958	23.952	26.952	29.947	32.947	35.94	38.94	41.937	44.937	47.929	51.929

Bolt Types

Nuts Types

Washer Type


Plain / Flat Washer	Spring Washers	Dome Washer	Hexagonal Washer	Square Washer

Dome Tooth Washer	Countersunk Washer	Tooth Lock Washer	Dock Washer	Fender Washer

Ogee Washer	Hex Washers	Split /Lock Washer	Customized Washer	Tab Washers

General Queries While Buying Fasteners

☆ High rejection rate
☆ No control on quality and testing
☆ Non availability
☆ Late deliveries
☆ Poor packaging/ Unprofessional Packing
☆ Poor after sales service
☆ Supply of wrong grades
☆ Material inconsistent with ASTM Standards
☆ Very hard material for use
☆ Poor surface finish
☆ No Mill test report
☆ Dubious Practices
☆ Lack of knowledge
☆ Product fails under high pressure
☆ High pricing of the goods due to supplier commission

Why Choose Alinox Steel. While Buying Fasteners?

☆ High pressure sustainability
☆ Impeccable surface finish
☆ Product replacement warranty
☆ After sales support and service
☆ World class buying experience
☆ Very quick delivery
☆ Mill test report/ Digital Mill test report in accordance with EN10204 NACE 3.1, NACE 3.2
☆ 3rd Party inspection
☆ Government and Private Laboratory Testing
☆ Test certificate from ISO 17025 Standards Laboratory
☆ Same day shipping of the goods
☆ Highest stock in the country
☆ Stringent Quality Testing and Control

High Tensile Fasteners

Products

Material

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