screws › machine screws
3M1034V4-8-21
Screw
Description
Fastener Length: 63/64", Thread: 1/4-28, Thread Length: 31/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.954 inches minimum and 0.984 inches maximum |
| Grip Diameter | 0.2490 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.490 inches minimum and 0.510 inches maximum |
| Head Diameter | 0.497 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | High-torque |
| Length | 63/64 |
| Material | Titanium |
| Material Specification | Ams4928 assn std single material response or ams4967 assn std single material response |
| Special Features | Thd hole in top of head 0.138-32 unjc-3b thd,hole 0.300 in. min. 0.345 in. max dp,counterbore 0.145 in. min. 0.150 in. max dia; injection port 0.120 in. lg,0.060 in. wide in unthd shank; distance from top of head to beginning of injection port 0.210 in. |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.444 inches minimum and 0.494 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for 3M1034V4-8-21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error