screws › machine screws
MS21093-0618
Military Standard Machine Screw
Description
Fastener Length: 1/4", Thread: 6-32, Thread Length: 3/16", MS21093 series screw
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Departure From Cited Designator | As modified by self-locking element in threads |
| Fastener Length | Between 0.219 inches and 0.250 inches |
| Head Diameter | Between 0.249 inches and 0.279 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 |
| Locking Feature | Strip |
| Material | Steel |
| Nondefinitive Specification/Std Data | 3 type and 3c style |
| Screw Material | Steel |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.097 inches and 0.199 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 6 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21093-0618. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error