The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-055-7108, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-055-7108 |
| Primary Part Number | S900073-8 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems |
| Status | ACTIVE |
| Spline Minor Diameter | 0.082 INCHES NOMINAL IN |
| Head Height | 0.112 INCHES NOMINAL IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Spline Width | 0.022 INCHES NOMINAL IN |
| Thread Length | 0.138 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Spline Major Diameter | 0.098 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | SIX SPLINE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.183 INCHES NOMINAL 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 |
|---|---|
| S900073-8 PRIMARY | General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems (CAN) |
| Reference | Meaning |
|---|---|
| B2A440-4C3 | 5/9 Secondary reference Bristol Babcock Canada Inc |
NSN 5305-00-055-7108 is a Screw,cap,socket Head, manufactured by General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-055-7108 has 1 manufacturer part number on file: S900073-8 (General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems).
Key specifications for S900073-8: Spline Minor Diameter: 0.082 INCHES NOMINAL IN; Head Height: 0.112 INCHES NOMINAL IN; Fastener Length: 0.250 INCHES NOMINAL IN; Spline Width: 0.022 INCHES NOMINAL 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.
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.