The 316 Stainless Steel Square U Bolts are made up of the chromium, nickel, molybdenum based austenitic stainless steel and are highly corrosion resistant. These are used primarily for the corrosion resistance against chloride ion stress. The Heavy Duty Stainless Steel U Bolts are made from different types of material grades but are mainly chosen for the high tensile strength. The SS U-Bolts Dimensions can vary from ½ inches through 24 inches bore size. There are also different custom sizes based on the application types and customer requirements of the SS 316 U Bolts. The material grade can be lower or higher based on the requirements. If the application does not need chloride ion stress corrosion resistance, then the 304 material could be used. We are also one of the leading 304 SS U-Bolts manufacturers and produce these bolts in all different grades. The U bolts are useful in capturing entire pipes together without going through them or having to apply flanges and fittings. There are different finish types such as the Galvanized Square U Bolts and different functional types such as the Heavy Duty Square U Bolts. Each of the types is used in appropriate application circumstances. The heavy tensile, heavy duty nuts are required by applications such as hydraulic pipes, oil and gas pipes, chemical, mechanical, engineering and construction applications. Our High Tensile Square U Bolts and the Heavy Duty Square U Bolts are used with long lasting lifespan. As a leading supplier, we produce the fasteners in all sizes such as the 1/2 Inch Square U Bolts. Regal Sales Corporation is a leading manufacturer and supplier of the different types such as the Stainless Steel Square U Bolt in various dimensions, grades and specifications. Please feel free to contact us for more information and pricing of the different types and sizes such as the 3 Inch Square U Bolts.
Stainless Steel U Bolt
Long U Bolts
Square U Bolt
Stainless Steel Long U Bolts are curved bolts that have threads on both ends of the bolts. There are different types based on the dimensions and the thread types. The material grade influences the mechanical, chemical and physical properties of the U bolt.
Stainless Steel U Bolts Size |
Stainless Steel U Bolts M2, M3, (M3.5), M4, M5, M6, M8, M10, M12, (M14), M16, (M18), M20, (M22), M24, (M27), M30, M33, M36, M42, (M45), M48 to M160 and Custom Sizes |
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Length | 3 mm to 200 mm |
Stainless Steel Bolts, Us Threads: | METRIC, BSW, BSF, UNC, UNF or as required |
Standard: | BS 4882 DIN 975 DIN 976 NFE 25136 ANSI B16.5
DIN, ISO, JIS, GB, IS, BS, ASTM and all International Standards
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Grade | 18-8 Stainless Steel, 4.8, 8.8, A2, A4, A2-70; A4-70; A4-80 U Bolts |
British standards | BS6105 (old: BSENISO 3506) which covers Part 1 bolts, screw and Us, part 2 nuts and part 4 tapping screws. |
DIN Standard | B.S. DIN 933, DIN 931, DIN 934, DIN 912, DIN 603, DIN 6923, DIN 970, DIN 7981, DIN 7982, DIN916, DIN 913, DIN 7985 |
ISO – International Organization for Standardization | ISO 4032, ISO 4033, ISO 4017, ISO7380 JIS standards |
UTS – Unified Thread Standard | UNC, UNF, UNEF, UNS, NPT, NPTF |
Dimensions | ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded. |
Finish | Per ASTM A380/A380M |
Production process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing |
Origin and service-region: | European Origin of Stainless Steel U Bolts are Western European. However projects with eastern origin are possible on request. |
Tolerance | +/-0.01mm to +/-0.05mm |
Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe, etc |
Finishing: | Zinc (yellow, white, blue, black), black oxide, Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Stainless steel: Passivated Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Stainless Steel, Mechanically Applied coating and some special one like DACROMET |
Stainless Steel bolting materials Surface Coating: |
All surface finishes can be supplied, including Zinc, Galvanised, Sherardized, Electroless Nickel, Dacromet, Geomet & PTFE. |
Surface treatment |
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Top Manufacturers | SPAX® Screws, GKW, Unbrako, Kundan, APL, Sundaram Precision, Infasco, EBY Fastener Etc. |
Stainless Steel U Bolts Packing: | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
Why choose us? |
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Other available material |
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Delivery time | Regular product is about 7-15 days, custom product will according to special requirement |
MOQ | 5 pieces |
Test Certificate: |
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Free Samples | Yes |
Payment Terms | T/T, Paypal, Western Union, L/C or Trade Assurance 30% deposit & balance before shipping |
Uses & application | Wind tower, Nuclear power, Railway, Automotive industry, Construction, Electronic industry |
Stainless Steel U Bolt
Standard Dimension | Description | Diameter | Length | Finish | Material Grade |
ISO 4014 / DIN 931 | U bolts | M-12 to M-100 | 30 mm to 1200 mm | Bright | SS 304, SS 316, SS 316L, 316S31 |
ISO 4017 / DIN 933 | U Screws | M-12 to M-100 | 30 mm to 1200 mm | Bright | SS 304, SS 316, SS 316L, 316S31 |
ANSI B18.2.1 | U bolts | 1/2" to 4" | 1" to 48" | Bright | B8, B8M, B8T, |
BS 1768 | U Screws | 1/2" to 4" | 30 mm to 1200 mm | Bright | B8, B8M, B8T, |
Carbon Steel U Bolts
Standard Dimension | Description | Diameter | Length | Finish | Material Grade |
ISO 4014 / DIN 931 | U bolts | M-12 to M-100 | 30 mm to 1200 mm | Plain / Zinc plated / HDG | 4.6, 5.6, 6.6, 8.8 |
ISO 4017 / DIN 933 | U Screws | M-12 to M-100 | 30 mm to 1200 mm | 4.6, 5.6, 6.6, 8.8 | |
ANSI B18.2.1 | U bolts | 1/2" to 4" | 1" to 48" | S, R, T | |
BS 1768 | U Screws | 1/2" to 4" | 30 mm to 1200 mm | A , B , C |
Duplex Stainless Steel U Bolts
Standard Dimension | Description | Diameter | Length | Finish | Material Grade |
ISO 4014 / DIN 931 | U bolts | M-12 to M-100 | 30 mm to 1200 mm | Bright | S32205 , S31803 |
ISO 4017 / DIN 933 | U Screws | M-12 to M-100 | 30 mm to 1200 mm | Bright | S32205 , S31803 |
ANSI B18.2.1 | U bolts | 1/2" to 4" | 1" to 48" | Bright | S32205 , S31803 |
BS 1768 | U Screws | 1/2" to 4" | 30 mm to 1200 mm | Bright | S32205 , S31803 |
Alloy Steel U Bolt
Standard Dimension | Description | Diameter | Length | Finish | Material Grade |
ISO 4014 / DIN 931 | U bolts | M-12 to M-100 | 30 mm to 1200 mm | Plain / Zinc plated / HDG / Teflon / PTFE / Zinc aluminum flake / Geomet | 10.9 / 12.9 |
ISO 4017 / DIN 933 | U Screws | M-12 to M-100 | 30 mm to 1200 mm | 10.9 / 12.9 | |
ANSI B18.2.1 | U bolts | 1/2" to 4" | 1" to 48" | B-7 / L-7 / B-16 | |
BS 1768 | U Screws | 1/2" to 4" | 30 mm to 1200 mm | B-7 / L-7 / B-16 |
A (SIZE) |
THREAD | B | C | D | PIPE | WLL (LB) |
WT (LB) |
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1/4" | 1/4"-20 | 0.75" | 0.63" | 1.25" | 3/8" | 435 | 0.05 |
1/4" | 1/4"-20 | 1.00" | 1.00" | 1.75" | 1/2" | 435 | 0.06 |
1/4" | 1/4"-20 | 1.13" | 1.00" | 2.00" | 3/4" | 435 | 0.07 |
1/4" | 1/4"-20 | 1.50" | 1.38" | 2.75" | 1" | 435 | 0.08 |
1/4" | 1/4"-20 | 1.75" | 1.38" | 3.00" | 1-1/4" | 435 | 0.09 |
1/4" | 1/4"-20 | 2.00" | 1.38" | 3.25" | 1-1/2" | 435 | 0.10 |
5/16" | 5/16"-18 | 1.00" | 1.38" | 2.19" | 1/2" | 610 | 0.11 |
5/16" | 5/16"-18 | 1.50" | 1.00" | 2.19" | 1" | 610 | 0.12 |
5/16" | 5/16"-18 | 1.75" | 1.13" | 2.69" | 1-1/4" | 610 | 0.14 |
5/16" | 5/16"-18 | 2.00" | 1.00" | 2.69" | 1-1/2" | 610 | 0.15 |
5/16" | 5/16"-18 | 2.50" | 1.00" | 3.19" | 2" | 610 | 0.16 |
5/16" | 5/16"-18 | 3.00" | 1.00" | 3.69" | 2-1/2" | 610 | 0.18 |
3/8" | 3/8"-16 | 1.00" | 1.25" | 2.25" | 1/2" | 1,090 | 0.17 |
3/8" | 3/8"-16 | 1.25" | 1.25" | 2.25" | 3/4" | 1,090 | 0.17 |
3/8" | 3/8"-16 | 1.50" | 1.25" | 2.50" | 1" | 1,090 | 0.18 |
3/8" | 3/8"-16 | 1.75" | 1.25" | 2.75" | 1-1/4" | 1,090 | 0.20 |
3/8" | 3/8"-16 | 2.00" | 1.25" | 2.63" | 1-1/2" | 1,090 | 0.20 |
3/8" | 3/8"-16 | 2.50" | 1.25" | 3.13" | 2" | 1,090 | 0.23 |
3/8" | 3/8"-16 | 3.00" | 1.25" | 3.63" | 2-1/2" | 1,090 | 0.27 |
3/8" | 3/8"-16 | 3.50" | 1.25" | 4.13" | 3" | 1,090 | 0.30 |
1/2" | 1/2"-13 | 3.00" | 1.63" | 4.50" | 2-1/2" | 2,020 | 0.59 |
1/2" | 1/2"-13 | 3.50" | 1.50" | 5.00" | 3" | 2,020 | 0.65 |
1/2" | 1/2"-13 | 4.00" | 1.50" | 5.50" | 3-1/2" | 2,020 | 0.69 |
1/2" | 1/2"-13 | 4.50" | 1.50" | 6.00" | 4" | 2,020 | 0.76 |
1/2" | 1/2"-13 | 5.63" | 2.00" | 7.25" | 5" | 2,020 | 0.93 |
1/2" | 1/2"-13 | 6.75" | 2.00" | 8.38" | 6" | 2,020 | 1.04 |
1/2" | 1/2"-13 | 8.75" | 2.00" | 10.38" | 8" | 2,020 | 1.27 |
Size (B x C) |
Thread Length (D) |
Fits Pipe Size | ||
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1/4"-20 (A) | ||||
9/16" | x | 1-3/8" | 3/4" | 1/4" |
3/4" | x | 1-1/4" | 3/4" | 3/8" |
3/4" | x | 1-3/4" | 1" | 3/8" |
3/4" | x | 2-3/4" | 2" | 3/8" |
3/4" | x | 4-3/4" | 4" | 3/8" |
1" | x | 1-3/4" | 1" | 1/2" |
1-1/8" | x | 2-1/4" | 1-1/4" | 3/4" |
1-1/8" | x | 3-1/2" | 2-3/4" | 3/4" |
1-3/8" | x | 2-3/4" | 1-3/4" | 1" |
1-3/4" | x | 2-3/4" | 1-1/4" | 1-1/4" |
2" | x | 3-1/2" | 1-3/4" | 1-1/2" |
5/16"-18 (A) | ||||
1-3/8" | x | 2-1/2" | 1-1/4" | 1" |
1-3/8" | x | 3-3/4" | 2-1/8" | 1" |
1-3/4" | x | 3" | 1-1/2" | 1-1/4" |
1-3/4" | x | 4-1/4" | 2-1/2" | 1-1/4" |
2" | x | 3-1/4" | 1-1/2" | 1-1/2" |
2" | x | 3-11/16" | 2" | 1-1/2" |
2" | x | 4-11/16" | 2-3/4" | 1-1/2" |
2-1/2" | x | 3-1/2" | 1-1/2" | 2" |
2-1/2" | x | 4-3/16" | 2-1/4" | 2" |
2-1/2" | x | 5-3/16" | 3" | 2" |
3/8"-16 (A) | ||||
2" | x | 3-1/8" | 1-1/2" | 1-1/2" |
2-1/2" | x | 3-5/8" | 1-3/4" | 2" |
3" | x | 4-1/8" | 1-3/4" | 2-1/2" |
3-1/2" | x | 4-5/8" | 2" | 3" |
3-1/2" | x | 6-1/2" | 3" | 3" |
1/2"-13 (A) | ||||
3" | x | 5" | 2-1/2" | 2-1/2" |
3-1/2" | x | 5-1/2" | 2-1/2" | 3" |
4" | x | 6" | 2-1/2" | 3-1/2" |
4-1/2" | x | 6-1/2" | 2-1/2" | 4" |
Stainless Steel Bolt :
AISI 302, 304/ L, 316/ L, 310, 317/ L, 410, 904L etc.
Carbon Steel Bolt :
ASTM A307, A193
Duplex & Super Duplex Steel Bolts :
ASTM / ASME A815 UNS No. S31803, UNS No. S 31254, UNS No. S 32205, UNS No. S 32750, UNS No. S 31550 and UNS No. S 32760
Alloy Steel Bolt :
ASTM / ASME A/ SA 193 / 194 B 6, B 16, B 7/ B 7M, 2, 2H, 2HM, GRADE 6, B7, B7M