Caliper Overseas is a trusted Button Head Screws manufacturer and supplier in India that offers quality fastening solutions to meet different industrial needs. Button Head Screws are precision fasteners with a low-profile, rounded head and internal hex drive, ideal for applications where there must be a smooth finish and clean look. These screws comply with ISO 7380, DIN 9427 and ASME B18.3.4M and are available in metric sizes M3 to M12.
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Button Head Screws offer high strength, corrosion resistance and secure fit while providing durability in severe conditions. Flush mounting through their low profile design allows them to be ideal for close tolerance applications where space is limited and appearance is an issue. Simple handling and reusable, the screws have better mechanical properties and a long life.
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Button Head Screws Specification
| Size Range: | M3 to M12 |
|---|---|
| Dimensional Standards | ISO 7380, DIN9427, BS 4168, ASME B18.3.4M |
| Length | 12mm, 25mm, 35mm, 10mm |
| Screws Types | Button Head Screws |
| Tolerance | +/-0.01mm to +/-0.05mm |
| Threads | METRIC, BSW, BSF, UNC, UNF or as required |
| UTS – Unified Thread Standard | UNC, UNF, UNEF, UNS, NPT, NPTF |
| Application | Wind Tower, Nuclear Power, Railway, Automotive Industry, Construction, Electronic Industry |
| Screws Packaging | Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector |
| Screws Forming | Hot Forged & Cold Forged |
| Certification | Dual Certified As per ASTM & ASME Codes |
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“View Button Head Screw Dimensions, Contact us today to know Button Head Cap Screw best offers & prices.”
Button Head Screw Dimensions
| Thread d | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | |
|---|---|---|---|---|---|---|---|---|---|
| P | 0,5 | 0,7 | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | |
| b | ref. | 18 | 20 | 22 | 24 | 28 | 32 | 36 | 44 |
| c | max. | 0,7 | 0,8 | 1 | 1,2 | 1,5 | 2 | 2,4 | 2,8 |
| min. | 0,55 | 0,65 | 0,8 | 1 | 1,25 | 1,7 | 2,1 | 2,5 | |
| da | max. | 3,6 | 4,7 | 5,7 | 6,8 | 9,2 | 11,2 | 13,7 | 17,7 |
| dc | max. | 6,9 | 9,4 | 11,8 | 13,6 | 17,8 | 21,9 | 26 | 34 |
| min. | 6,32 | 8,82 | 11,1 | 12,9 | 17,1 | 21,06 | 25,16 | 33 | |
| dk | max. | 5,2 | 7,2 | 8,8 | 10 | 13,2 | 16,5 | 19,4 | 26 |
| min. | 4,9 | 6,8 | 8,4 | 9,6 | 12,8 | 16,1 | 18,9 | 25,5 | |
| dL | ref. | 2,6 | 3,8 | 5 | 6 | 7,7 | 10 | 12 | 16 |
| ds | max. | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 16 |
| min. | 2,86 | 3,82 | 4,82 | 5,82 | 7,78 | 9,78 | 11,73 | 15,73 | |
| dw | min. | 5,74 | 8,24 | 10,4 | 12,2 | 16,4 | 20,22 | 24,32 | 32 |
| e | min. | 2,303 | 2,873 | 3,443 | 4,583 | 5,723 | 6,863 | 9,149 | 11,429 |
| k | max. | 1,65 | 2,2 | 2,75 | 3,3 | 4,4 | 5,5 | 6,6 | 8,8 |
| min. | 1,4 | 1,95 | 2,5 | 3 | 4,1 | 5,2 | 6,24 | 8,44 | |
| r1 | max. | 3,7 | 4,6 | 5,75 | 6,15 | 7,95 | 9,8 | 11,2 | 15,3 |
| min. | 3,3 | 4,2 | 5,25 | 5,65 | 7,45 | 9,2 | 10,5 | 14,5 | |
| rs | min. | 0,1 | 0,2 | 0,2 | 0,25 | 0,4 | 0,4 | 0,6 | 0,6 |
| rt | min. | 0,3 | 0,4 | 0,45 | 0,5 | 0,7 | 0,7 | 1,1 | 1,1 |
| s | nom. | 2 | 2,5 | 3 | 4 | 5 | 6 | 8 | 10 |
| max. | 2,08 | 2,58 | 3,08 | 4,095 | 5,14 | 6,14 | 8,175 | 10,175 | |
| min. | 2,02 | 2,52 | 3,02 | 4,02 | 5,02 | 6,02 | 8,025 | 10,025 | |
| t | min. | 1,04 | 1,3 | 1,56 | 2,08 | 2,6 | 3,12 | 4,16 | 5,2 |
| w | min. | 0,2 | 0,3 | 0,38 | 0,74 | 1,05 | 1,45 | 1,63 | 2,25 |
| Thread d | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| l | ls and fg | |||||||||||||||||
| ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | ls | lg | |||
| nom. | min. | max. | min | max. | min | max. | min | max. | min | max. | min | max. | min | max. | min | max. | min | max. |
| 6 | 5,76 | 6,24 | + | + | + | + | ||||||||||||
| 8 | 7,71 | 8,29 | + | + | + | + | + | + | ||||||||||
| 10 | 9,71 | 10,29 | + | + | + | + | + | + | + | + | ||||||||
| 12 | 11,65 | 12,35 | + | + | + | + | + | + | + | + | + | + | ||||||
| 16 | 15,65 | 16,35 | + | + | + | + | + | + | + | + | + | + | + | + | ||||
| 20 | 19,58 | 20,42 | + | + | + | + | + | + | + | + | + | + | + | + | + | + | ||
| 25 | 24,58 | 25,42 | 4,5 | 7 | + | + | + | + | + | + | + | + | + | + | + | + | + | + |
| 30 | 29,58 | 30,42 | 9,5 | 12 | 6,5 | 10 | 4 | 8 | + | + | + | + | + | + | + | + | + | + |
| 35 | 34,5 | 35,5 | 11,5 | 15 | 9 | 13 | 6 | 11 | + | + | + | + | + | + | + | + | ||
| 40 | 39,5 | 40,5 | 16,5 | 20 | 14 | 18 | 11 | 16 | 5,75 | 12 | + | + | + | + | + | + | ||
| 45 | 44,5 | 45,5 | 19 | 23 | 16 | 21 | 10,75 | 17 | 5,5 | 13 | + | + | + | + | ||||
| 50 | 49,5 | 50,5 | 24 | 28 | 21 | 26 | 15,75 | 22 | 10,5 | 18 | + | + | + | + | ||||
| 55 | 54,4 | 55,6 | 26 | 31 | 20,75 | 27 | 15,5 | 23 | 10,25 | 19 | + | + | ||||||
| 60 | 59,4 | 60,6 | 31 | 36 | 25,75 | 32 | 20,5 | 28 | 15,25 | 24 | + | + | ||||||
| 65 | 64,4 | 65,6 | 30,75 | 37 | 25,5 | 33 | 20,25 | 29 | 11 | 21 | ||||||||
| 70 | 69,4 | 70,6 | 35,75 | 42 | 30,5 | 38 | 25,25 | 34 | 16 | 26 | ||||||||
| 80 | 79,4 | 80,6 | 45,75 | 52 | 40,5 | 48 | 35,25 | 44 | 26 | 36 | ||||||||
| 90 | 89,4 | 90,6 | 50,5 | 58 | 45,25 | 54 | 36 | 46 | ||||||||||
Button Head Screw Size Chart
| inal Size | A | H | S | J | T | F | L | Tensile Test Load | Single Shear Strength of Body | Seating Torques in./lbs. | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Head Diameter | Head Height | Head Side Height | Hex Socket Size | Key Engage- ment | Fillet Transition Diameter | Max Standard Length | ||||||||
| Max | Min | Max | Min | Ref | Nom | Min | Max | Min | Nom | Lb. | Lbs., Min. | Coarse Thread | Fine Thread | |
| 4 | 0.213 | 0.201 | 0.059 | 0.051 | 0.015 | 1/16 | 0.035 | 0.132 | 0.122 | 0.50 | 840 | 950 | 7.0 | 8. |
| 6 | 0.262 | 0.250 | 0.073 | 0.063 | 0.015 | 5/64 | 0.044 | 0.158 | 0.148 | 0.63 | 1,260 | 1,400 | 13. | 15. |
| 8 | 0.312 | 0.298 | 0.087 | 0.077 | 0.015 | 3/32 | 0.052 | 0.194 | 0.184 | 0.75 | 1,940 | 2,000 | 25. | 26. |
| 10 | 0.361 | 0.347 | 0.101 | 0.091 | 0.020 | 1/8 | 0.070 | 0.220 | 0.210 | 1.00 | 2,440 | 2,700 | 45. | 48. |
| 1/4 | 0.437 | 0.419 | 0.132 | 0.122 | 0.031 | 5/32 | 0.087 | 0.290 | 0.280 | 1.00 | 4,430 | 4,700 | 95. | 110. |
| 5/16 | 0.547 | 0.527 | 0.166 | 0.152 | 0.031 | 3/16 | 0.105 | 0.353 | 0.343 | 1.00 | 7,300 | 7,300 | 190. | 210. |
| 3/8 | 0.656 | 0.636 | 0.199 | 0.185 | 0.031 | 7/32 | 0.122 | 0.415 | 0.405 | 1.25 | 10,800 | 10,600 | 300. | 300. |
| 1/2 | 0.875 | 0.851 | 0.265 | 0.245 | 0.046 | 5/16 | 0.175 | 0.560 | 0.540 | 2.00 | 19,800 | 18,800 | 900. | 960. |
| 5/8 | 1.000 | 0.970 | 0.331 | 0.311 | 0.062 | 3/8 | 0.210 | 0.685 | 0.665 | 2.00 | 31,500 | 29,400 | 1,700 | 1,900 |
| Tolerance on Length | Nominal Screw Size | Nominal Screw Length | ||||||||||||
| Up to 1 in., Inclusive | Over 1 in. to 2-1/2 in., Inclusive | |||||||||||||
| 0 thru 3/8, Inclusive | -0.03 | -0.04 | ||||||||||||
| 1/2 and 5/8, Inclusive | -0.03 | -0.06 | ||||||||||||
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