
In our cutting-edge, technologically advanced warehouses, where we use cutting-edge machinery to ensure that all of our products are of the highest quality and durability, we design and develop SS 12 Point Flange Bolts. Our team ensures that all of our alloy steel 12 point flange bolts, including Nickel Alloy 12 point flange bolts and Carbon Steel 12 point flange bolts, meet national and international standards. We specialise in Brass 12 Point Flange Bolts in a range of sizes from 2 mm to 12 mm, as well as a variety of options. We offer a comprehensive selection of 12 point flange bolt materials and strengths. In addition, we offer 12 point flange bolts in a range of sizes to accommodate the needs of all of our customers. We take pride in the fact that all of our products meet the required industrial 12 point flange bolt standards and are offered at competitive and affordable prices.
STANDARD SPECIFICATION
- Product name:-Stainless Steel 12-Point Flange Bolts
- Standard:-ISO 4017, DIN931, GB5783, DIN, ASTM, ANSI, JIS, EN, AS
- DIN Standard:- B.S. DIN933 DIN931 DIN934 DIN912 DIN603 DIN6923
- Surface treatment:-Passivation /plain
- Stainless Steel 12-Point Flange Bolts Size:-M10 To M100
- Stainless Steel 12-Point Flange Bolts Diameter:- M3-M60
- Stainless Steel 12-Point Flange Bolts Length:-6mm-500mm
- Stainless Steel 12-Point Flange Bolts Material:-18-8 Stainless Steel, stainless steel ss 304/ SS316 A2/A4, SS201, SS303, SS304, SS316, SS316L, SS904L, A2-70; A4-70; A4-80
- Neck type:-Hex, Square, Triangular, Oval & Knurled etc
- Drive type:-Phil, Slotted, Hex socket, Torx & square slot etc
- Stainless Steel 12-Point Flange Bolts Application:-Wind tower, Nuclear power, Railway, Automotive industry, Construction, Electronic industry
- Dimensions:ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded.
- Drive Style:-Type I
- Thread Requirements:-ASME B1.1, UNC & UNF, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge)
- Finish:-Per ASTM A380/A380M
- Finishing:-Zinc Plated (Yellow, White, Blue, Black), Hop Dip Galvanized (HDG) phosphorization, Black Oxide, Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated, Brass Plated, Tin Plated, Black Plated, Gold Plated, Salt fog test
- Stock Products:-Stainless steel: All DIN, GB Standard and part ASNI standard stainless steel 12-Point Flange Bolts, 12-Point Flange: ISO7380, DIN7981, DIN7982, DIN916, DIN913, DIN7985, DIN912
- Others:-OEM, ODM, ±0.03MM tolerance
- Production technology:-Cold Forged
- Manufacturing Process:-Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing
- Surface treatment:-Passivation, Polish, Anodizing, Sand blasting, Black oxide coating, Heat-disposing, Rust preventive oil, Hot dip galvanized Shoulder Bolts, Electroplating (color, blue, white, black zinc, Ni, Cr, tin, silver)
- Coatings:-Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request
- Tolerance of stainless steel 12-Point Flange Bolts:-+/-0.01mm to +/-0.05mm
- Production Capacity:2,700,000 pieces per month
- Stainless Steel 12 Point Flange Bolt :-AISI 302, 304, 304L,316, 316L, 310, 317, 316S31,317L, 321, 347, 410, 420,904L etc.
- Duplex & Super Duplex Steel 12 Point Flange Bolt:-ASTM / ASME A815 UNS No. S31803, UNS No. S 32205, UNS No. S 31254, UNS No. S 31550, UNS No. S 32750, and UNS No. S 32760
- Carbon Steel 12 Point Flange Bolt:-ASTM A307, A193
- Alloy Steel 12 Point Flange Bolt:-ASTM / ASME A/SA 193 / 194 B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
- Nickel Alloy 12 Point Flange Bolt:-ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)

12 Point Flange Bolt Dimensions | |||||
---|---|---|---|---|---|
Nominal Size | Head Width | Flange Diameter |
Head Height |
||
Across Flats |
Across Corners |
||||
Fraction | Decimal | Max | Min | Max | Max |
5/8 | 0.6250 | 5/8 | 45/64 | 15/16 | 5/8 |
5/16 | 0.3125 | 5/16 | 11/32 | 15/32 | 5/16 |
3/8 | 0.3750 | 3/8 | 27/64 | 9/16 | 3/8 |
7/16 | 0.4375 | 7/16 | 31/64 | 21/32 | 7/16 |
1/4 | 0.2500 | 1/4 | 9/32 | 3/8 | 17/64 |
1/2 | 0.5000 | 1/2 | 9/16 | 3/4 | 1/2 |
9/16 | 0.5625 | 9/16 | 41/64 | 27/32 | 9/16 |
3/4 | 0.7500 | 3/4 | 27/32 | 1 1/8 | 3/4 |
7/8 | 0.8750 | 7/8 | 63/64 | 1 5/16 | 7/8 |
1 | 1.0000 | 1 | 1 1/8 | 1 1/2 | 1 |
Nom. Dia. (d) | M6 | M8 | M10 | M12 | M14 | M16 | M20 | |
---|---|---|---|---|---|---|---|---|
Thread Pitch | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | |
Thread Length (b) | L < 125mm | 18 | 22 | 26 | 30 | 34 | 38 | 46 |
125-200mm | – | 28 | 32 | 36 | 40 | 44 | 52 | |
L > 200mm | – | – | 45 | 49 | 53 | 57 | 65 | |
ds | Min. | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
Max. | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | |
K | Max. | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 |
Flange Diameter | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |
e | Min. | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 |
s | Min. | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 |
Max. | 10 | 13 | 15 | 16 | 18 | 21 | 27 |
TYPES OF 12 POINT FLANGE BOLTS










