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 ability | water glass process | silica sol process | Machining |
| Available material | carbon steel, alloy steel, stainless steel, iron | carbon steel, alloy steel, stainless steel, iron, aluminum, brass, etc. | |
| Available range | 0.5kg-100kg | 0.01kg-10kg | truning diameter: ≤480mm |
| thickness≥6mm | thickness≥3mm | traval of spindle: ≤900mm | |
| Casting tolerance | CT 8 | CT 6 | accuracy: ±0.015 |
| Casting surface roughness | Ra25um | Ra12.5um | surface roughness: Ra3.2um |
| Material standard | GB, ISO, DIN, ASTM, AISI, BS, NF, AS, JIS | ||
| Certificate | ISO 9001-2008 | ||
| Available service | customized casting upon offered sample(s), drawing(s), OEM, ODM | ||
| Surface treatment | shot blasting, sand blasting, zinc plating, hot galvanizing, hot galvanizing, ktl(e-coating),powder coating,nickle plating,painting | ||
| Quality control | 100% visual inspection,chemical analysis test, dimention inspection,tensile test,hardness test,yielding test,NDT as customer’s request | ||
| Parts application | engineering machinery parts, agricultural machinery parts, construction machinery parts, marine machinery parts,auto/truck components, oilfield equipment components, hardware accessories, machinery equipment components | ||
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US Bolts |
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Head Marking |
Grade and |
Nominal Size Range |
Mechanical Properties |
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Proof Load |
Min. Yield Strength |
Min. Tensile Strength |
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No Markings |
Grade 2 Low or medium carbon steel |
1/4″ thru 3/4″ |
55,000 |
57,000 |
74,000 |
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Over 3/4″ thru 1-1/2″ |
33,000 |
36,000 |
60,000 |
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3 Radial Lines |
Grade 5 Medium carbon steel, quenched and tempered |
1/4″ thru 1″ |
85,000 |
92,000 |
120,000 |
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Over 1″ thru 1-1/2″ |
74,000 |
81,000 |
105,000 |
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6 Radial Lines |
Grade 8 Medium carbon alloy steel, quenched and tempered |
1/4″ thru 1-1/2″ |
120,000 |
130,000 |
150,000 |
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Grade A325 Carbon or Alloy Steel with or without Boron |
1/2″ thru 1-1/2″ |
85,000 |
92,000 |
120,000 |
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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 |
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Metric Bolts |
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Head Marking |
Class and |
Nominal Size Range |
Mechanical Properties |
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Proof Load |
Min. Yield Strength |
Min. Tensile Strength |
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Class 8.8 Medium carbon steel, quenched and tempered |
All Sizes below 16mm |
580 |
640 |
800 |
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16mm – 72mm |
600 |
660 |
830 |
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Class 10.9 Alloy steel, quenched and tempered |
5mm – 100mm |
830 |
940 |
1040 |
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Class 12.9 Alloy steel, quenched and tempered |
1.6mm – 100mm |
970 |
1100 |
1220 |
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Stainless markings vary. Most stainless is non-magnetic. |
A-2 Stainless Steel alloy with 17- 19% chromium and 8-13% nickel |
All Sizes thru 20mm |
210 Min. |
500 Min. |
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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 |
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Passivated;Zn- Plated,Sandblast and Anodize,Chromate, Polish, Plain,etc
Packing Details : Packing, solid bicycle saddle, 50pcs/carton
Delivery Details : 3-30 days after order of Solid bicycle tire tubes
Special logistics packaging
Suitable carton size
