The Screw,machine, cataloged under National Stock Number 5305-00-957-2640, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-957-2640 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | CANCELLED |
| Screw Surface Treatment | CADMIUM AND CHROMATE |
| Fastener Length | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Screw Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.964 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 3 TYPE AND 2C STYLE |
| Screw Material | STEEL |
| Minimum Tensile Strength | 60000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.452 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-B-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS24583-74 | 5/9 Secondary reference U.S. Government activity |
| B4525-304-58 | 5/1 Secondary reference Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters |
| FFS92 | 4/1 Identification reference U.S. Government activity |
| 5305009572640 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 188741 | E/8 Replaced / superseded reference General Motors Llc Dba General Motors Llc |
| MS35191-294 | 5/9 Secondary reference U.S. Government activity |
| 7104-6323 | 5/9 Secondary reference Sypris Electronics, Llc |
| MS35191-294 | 3/2 Design control — primary reference U.S. Government activity |
| 0914112 | E/8 Replaced / superseded reference U.S. Government activity |
NSN 5305-00-957-2640 is a Screw,machine, classified under FSC 5305, Screws. Status: cancelled.
1 possible match (shared part number, not a government interchangeability claim): 5330-01-012-3674. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-957-2640: Screw Surface Treatment: CADMIUM AND CHROMATE; Fastener Length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Screw Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE; Thread Length: 0.964 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5305-00-957-2640 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.