The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-316-5271, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 20 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 | 5305-01-316-5271 |
| Primary Part Number | 1611200-233 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Head Height | 0.988 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM B633 TY 2,CL FE/ZM 5 ASSN STD SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 2.220 INCHES MINIMUM IN |
| Hardness Rating | 37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Surface Treatment | ZINC AND CHROMATE FASTENER |
| Minimum Tensile Strength | 170000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 8 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.479 INCHES MINIMUM AND 1.500 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 |
|---|---|
| 3176207-214 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 1611200-233 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5305-01-316-5271 is a Screw,cap,socket Head, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-316-5271 has 2 manufacturer part numbers on file: 3176207-214 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1611200-233 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1611200-233: Width Across Flats: 0.750 INCHES NOMINAL IN; Head Height: 0.988 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Fastener Length: 2.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM B633 TY 2,CL FE/ZM 5 ASSN STD SINGLE TREATMENT RESPONSE FASTENER. 20 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.