The Screw,shoulder, cataloged under National Stock Number 5305-01-381-6320, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-381-6320 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| FSC Application Data | IDF BLANKER MOUNTING |
| Head Height | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Fastener Length | 6.188 INCHES NOMINAL IN |
| Shoulder Length | 0.021 INCHES MINIMUM AND 0.026 INCHES MAXIMUM THIRD SHOULDER IN |
| Shoulder Length | 1.115 INCHES MINIMUM AND 1.120 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Length | 4.195 INCHES MINIMUM AND 4.200 INCHES MAXIMUM SECOND SHOULDER IN |
| Surface Treatment Document and Classification | MIL-F-14072-E300 MIL SPEC ALL TREATMENT RESPONSES OVERALL |
| Shoulder Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM THIRD SHOULDER IN |
| Shoulder Diameter | 0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM SECOND SHOULDER IN |
| Thread Length | 0.444 INCHES NOMINAL IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1C9894-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-381-6320 is a Screw,shoulder, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-381-6320: FSC Application Data: IDF BLANKER MOUNTING; Head Height: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Fastener Length: 6.188 INCHES NOMINAL IN; Shoulder Length: 0.021 INCHES MINIMUM AND 0.026 INCHES MAXIMUM THIRD SHOULDER IN. 23 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.