The Screw,shoulder, cataloged under National Stock Number 5305-01-320-1055, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-320-1055 |
| Primary Part Number | 6310220-002 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.160 INCHES NOMINAL IN |
| Fastener Length | 1.820 INCHES MINIMUM AND 1.860 INCHES MAXIMUM IN |
| Shoulder Length | 1.530 INCHES MINIMUM AND 1.535 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-C-320 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FIRST SHOULDER |
| Shoulder Diameter | 0.246 INCHES MINIMUM AND 0.247 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.285 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE FIRST SHOULDER |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 36 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 6310220-002 PRIMARY | Naval Sea Systems Command (USA) |
| 6310220-002 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
NSN 5305-01-320-1055 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-320-1055 has 2 manufacturer part numbers on file: 6310220-002 (Naval Sea Systems Command), 6310220-002 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 6310220-002: Head Height: 0.160 INCHES NOMINAL IN; Fastener Length: 1.820 INCHES MINIMUM AND 1.860 INCHES MAXIMUM IN; Shoulder Length: 1.530 INCHES MINIMUM AND 1.535 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-C-320 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FIRST SHOULDER. 18 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.