The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-643-1032, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Evansville Bolt & Nut Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-643-1032 |
| Primary Part Number | 10F37KBCS |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Evansville Bolt & Nut Inc |
| Status | ACTIVE |
| Width Across Flats | 0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Head Height | 0.185 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.636 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10F37KBCS PRIMARY | Evansville Bolt & Nut Inc (USA) |
NSN 5305-01-643-1032 is a Screw,cap,socket Head, manufactured by Evansville Bolt & Nut Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-643-1032 has 1 manufacturer part number on file: 10F37KBCS (Evansville Bolt & Nut Inc).
Key specifications for 10F37KBCS: Width Across Flats: 0.218 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN; Head Height: 0.185 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN; Fastener Length: 1.250 INCHES NOMINAL IN; Thread Length: 1.250 INCHES NOMINAL IN. 13 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.
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.