Fastening devices such as bolts are available in various shapes, sizes as well as materials. For instance, if you take m8 hex bolts and nuts, the designation indicates that the metric size of the fastener is 8mm. To specify, the metric size of the M8 Hex Bolt has a diameter of 8mm. Hex bolts or hexagonal bolts require a corresponding wrench to unscrew the said bolt. So if the diameter of the bolt is around 8mm, the corresponding m8 hex bolt spanner size must have an internal diameter of 8mm.
This is necessary for the easy removal of the bolt. Use of a larger m8 hex bolt wrench size will be loose for the bolt, and so it does not permit the proper attachment, and hence the removal of the bolt. On the other hand, if the inner diameter of the spanner is less, then it does not fit in the grooves of the m8 hex bolt 150mm. A hex bolt may be tightened by the use of torque inclination, m8 hex bolt torque, rotating angle, stretch measurement along with other methods.
An Allan head bolt or an m8 hex socket bolt may be fastened with the use of a wrench that is hexagon in shape. Generally, they require a key to either tighten or loosen the m8 hex head bolt. Similar to socket bolts, the m8 hex flange bolt is loosened or fastened with the use of a hex shaped spanner or wrench. Flange bolts have a circular flange that is attached below the head of said bolts to evenly distribute the load.
| standard | ISO 10642 |
|---|---|
| British standards | BS 57 |
| Size |
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 |
| Length | 3 mm to 200 mm |
| Stainless Steel Threads: | METRIC, BSW, BSF, UNC, UNF or as required |
| Standard: |
DIN, ISO, JIS, GB, IS, BS, ASTM and all International Standards |
| 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 |
| UTS – Unified Thread Standard | UNC, UNF, UNEF, UNS, NPT, NPTF |
| Dimensions | ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded. |
| Tolerance | +/-0.01mm to +/-0.05mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe, etc |
| Type | Pan/ Round/ Oval/ Hex Head/ Truss head |
| Head | Pan head, flat head, oval head, hex head, phillips head |
| 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 |
| Finish | Per ASTM A380/A380M |
| Production process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing |
| Surface treatment |
|
| Top Manufacturers | SPAX® Screws, GKW, Unbrako, Kundan, APL, Sundaram Precision, Infasco, EBY Fastener Etc. |
| MOQ | 5 pieces |
| Test Certificate: |
|
| Free Samples | Yes |
| Delivery time | Regular product is about 7-15 days, custom product will according to special requirement |
| Payment Terms | T/T, Paypal, Western Union, L/C or Trade Assurance 30% deposit & balance before shipping |
| Uses & application | Railway, Wind tower, Nuclear power, Automotive industry, Construction, Electronic industry |
| d1d1 | k | e | s |
|---|---|---|---|
| M3 | 2 | 6.01 | 5.5 |
| M4 | 2.8 | 7.66 | 7 |
| M5 | 3.5 | 8.79 | 8 |
| M6 | 4 | 11.05 | 10 |
| M8 | 5.3 | 14.38 | 13 |
| M10 | 6.4 | 18.9 | 17 |
| M12 | 7.5 | 21.1 | 19 |
| M14 | 8.8 | 24.49 | 22 |
| M16 | 10 | 26.75 | 24 |
| M18 | 11.5 | 30.14 | 27 |
| M20 | 12.5 | 33.53 | 30 |
| M22 | 14 | 35.72 | 32 |
| M24 | 15 | 39.98 | 36 |
| M27 | 17 | 45.2 | 41 |
| M30 | 18.7 | 50.85 | 46 |
| M33 | 21 | 55.37 | 50 |
| M36 | 22.5 | 60.79 | 55 |
| M42 | 26 | 71.3 | 65 |
| M48 | 30 | 82.6 | 75 |
| d1d1 | k | e | s |
|---|---|---|---|
| M3 | 2 | 6.01 | 5.5 |
| M4 | 2.8 | 7.66 | 7 |
| M5 | 3.5 | 8.79 | 8 |
| M6 | 4 | 11.05 | 10 |
| M8 | 5.3 | 14.38 | 13 |
| M10 | 6.4 | 18.9 | 16 |
| M12 | 7.5 | 21.1 | 18 |
| M14 | 8.8 | 24.49 | 21 |
| M16 | 10 | 26.75 | 24 |
| M18 | 11.5 | 30.14 | 27 |
| M20 | 12.5 | 33.53 | 30 |
| M22 | 14 | 35.72 | 34 |
| 15 | 39.98 | 36 | |
| M27 | 17 | 45.2 | 41 |
| M30 | 18.7 | 50.85 | 46 |
| M33 | 21 | 55.37 | 50 |
| M36 | 22.5 | 60.79 | 55 |
| M42 | 26 | 71.3 | 65 |
| M48 | 30 | 82.6 | 75 |
|
Material
|
Standards
|
Grades
|
|---|---|---|
|
Nickel Alloy |
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)
|
|
Stainless Steel
|
ASTM / ASME A/SA 193 / 194
|
B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4
|
|
Alloy Steel
|
ASTM / ASME A/SA 193 / 194 GR
|
B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
|
|
Duplex Steel
|
UNS NO. S 31803, S 32205
|
Range: M10 TO M100, LENGTH UPTO 5 METERS
|
|
Nonmetallic Materials:
|
Acrylic, Kel-F, Lexan, Polypropylene, Poly Vinyl Chloride, Teflon, Zytel 31, 101, 105 | |
|
High-Temp Alloys
|
Discaloy, 19-9 DL, 16-25-6, A286, Titanium, Nimonic 80, Mulitmet, Haynes 25, Greek Ascalloy, Unitemp 252, Udimet 500, Rene 41, Inco 700, Inco 901, Hastelloy X, 235, Waspaloy, RA 330 | |
|
Copper Base Alloys
|
Copper, Brasses: Yellow, Free-cut, Red, Naval, Bronze: Commercial, Phosphor, Silicon A & B, Aluminum, Silicon-Aluminum, Manganese, Ampco Alloys, Munitz Metal, Cupro-Nicles | |
|
Aluminum Alloys:
|
1100, 2011, 2014, 2017, 2024, 3003, 5052, 6053, 6061, 7075 | |
|
Trademarks:
|
Carpenter, Armco, INCO, Cabot, DuPont. | |
|
Finish:
|
Black Oxide, Zinc Plating, Hot Dip Galvanized | |
