The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-277-3189, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bek, Inc. Dba Level 1 Fasteners. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-277-3189 |
| Primary Part Number | 60-15-0410 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bek, Inc. Dba Level 1 Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Head Height | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Fastener Length | 2.920 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Thread Length | 1.750 INCHES MINIMUM AND 2.820 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | SELF-LOCKING LOCKING FEATURE |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 11 |
| Material | NICKEL ALLOY 500 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.921 INCHES MINIMUM AND 0.938 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 |
|---|---|
| 60-15-0410 | Bek, Inc. Dba Level 1 Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 845-4687558 PIECE 9 | 3/2 Design control — primary reference U.S. Government activity |
| 60-15-0410 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-277-3189 is a Screw,cap,socket Head, manufactured by Bek, Inc. Dba Level 1 Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-277-3189 has 1 manufacturer part number on file: 60-15-0410 (Bek, Inc. Dba Level 1 Fasteners).
Key specifications for 60-15-0410: Width Across Flats: 0.500 INCHES NOMINAL IN; Head Height: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Fastener Length: 2.920 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN; Thread Length: 1.750 INCHES MINIMUM AND 2.820 INCHES MAXIMUM 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.