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Bolt

Keywords: carbon steel bolt,hex bolt,stainless steel bolt,bolt and nuts
Size: M4-48
Standard & Grade: DIN GB ISO JIS BA ANSI&SUS201, SUS304, SUS316, A2-70, A2-80, A4-80, 4.8 6.8 8.8 10.9 12.9
Thread: coarse, fine
Certification: ISO9001, SGS, CTI, ROHS
Payment: TT, LC , OA , D/P
Packing: Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped
Usage: building industry, machinery spare part,Auto parts

Stud Bolt

Stud has a thread on full lengths or at both ends. As shown in images. It is having three components if washers are not used (two nuts and stud). If you used washer it would become five. Sometimes additional nuts are used for hydraulic tension with larger size stud.


Stud Bolt Specification & Standard

Various ASME standards are used for stud bolts and nuts to manufacturing bolting material. List of such standard is given below.

Diameter and Lengths of the stud and bolt are covered in ASME B16.5 & B16.47

ASME B1.1 Unified Inch Screw Threads (Cores and Fine thread series- normally Cores thread series is used for stud used in piping)

ASME B18.2.1 for Square and Hex Bolts and Screws

ASME B18.2.2 Square and Hex Nuts

ASME B18.21.1 Lock Washers

ASME B18.22.1 Plain Washers


Machine Bolt

Bolts have a thread at one end and hexagonal head on another end. See the image below. In the process, piping bolts are used with lower strength flange types such as GRE/GRP, bronze. Usually, washers are used with bolt to prevent excessive load to the flange.


Our abilitywater glass processsilica sol processMachining
Available materialcarbon steel, alloy steel, stainless steel, ironcarbon steel, alloy steel, stainless steel, iron, aluminum, brass, etc.
Available range0.5kg-100kg0.01kg-10kgtruning diameter:  480mm

thickness6mmthickness3mmtraval of spindle:  900mm
Casting toleranceCT 8 CT 6accuracy: ±0.015
Casting surface roughnessRa25umRa12.5umsurface roughness: Ra3.2um
Material standardGB, ISO, DIN, ASTM, AISI, BS, NF, AS, JIS
CertificateISO 9001-2008
Available servicecustomized casting upon offered sample(s), drawing(s), OEM, ODM
Surface treatmentshot blasting, sand blasting, zinc plating,  hot galvanizing, hot galvanizing, ktl(e-coating),powder coating,nickle plating,painting
Quality control100% visual inspection,chemical analysis test, dimention inspection,tensile test,hardness test,yielding test,NDT as customer’s request
Parts applicationengineering machinery parts, agricultural machinery parts, construction machinery parts, marine machinery parts,auto/truck components, oilfield equipment components, hardware accessories, machinery equipment components


US Bolts

Head Marking

Grade and
Material

Nominal Size Range
(inches)

Mechanical Properties

Proof Load
(psi)

Min. Yield Strength
(psi)

Min. Tensile Strength
(psi)

No Markings

Grade 2

Low or medium carbon steel

1/4″ thru 3/4″

55,000

57,000

74,000

Over 3/4″ thru 1-1/2″

33,000

36,000

60,000

3 Radial Lines

Grade 5

Medium carbon steel, quenched and tempered

1/4″ thru 1″

85,000

92,000

120,000

Over 1″ thru 1-1/2″

74,000

81,000

105,000

6 Radial Lines

Grade 8

Medium carbon alloy steel, quenched and tempered

1/4″ thru 1-1/2″

120,000

130,000

150,000


Grade A325

Carbon or Alloy Steel with or without Boron

1/2″ thru 1-1/2″

85,000

92,000

120,000

Stainless markings vary. Most stainless is non-magnetic

18-8 Stainless

Steel alloy with 17-19% Chromium and 8-13% Nickel

All Sizes thru 1″


20,000 Min. 65,000 Typical

65,000 Min. 100,000 – 150,000 Typical

Metric Bolts

Head Marking

Class and
Material

Nominal Size Range
(mm)

Mechanical Properties

Proof Load
(MPa)

Min. Yield Strength
(MPa)

Min. Tensile Strength
(MPa)


Class 8.8

Medium carbon steel, quenched and tempered

All Sizes below 16mm

580

640

800

16mm – 72mm

600

660

830


Class 10.9

Alloy steel, quenched and tempered

5mm – 100mm

830

940

1040


Class 12.9

Alloy steel, quenched and tempered

1.6mm – 100mm

970

1100

1220

Stainless markings vary. Most stainless is non-magnetic.
Usually stamped A-2.

A-2 Stainless

Steel alloy with 17- 19% chromium and 8-13% nickel

All Sizes thru 20mm


210 Min.
450 Typical

500 Min.
700 Typical

Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing.

Yield Strength: The maximum load at which a material exhibits a specific permanent deformation

Proof Load: An axial tensile load which the product must withstand without evidence of any permanent set.

1MPa = 1N/mm2 = 145 pounds/inch2



Passivated;Zn- Plated,Sandblast and Anodize,Chromate, Polish, Plain,etc


Product Inquiry

Shanghai Beall Metal Co.,Limited

Over 25 years of steel experience, we offer a full size range and vary standard of steel pipe, OCTG&line pipe, pipe fittings and flange, valve and gasket, bolts and nuts and scaffolding products for projects around the world.

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