The Screw,shoulder, cataloged under National Stock Number 5305-01-346-3725, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-346-3725 |
| Primary Part Number | 12705-5C-17B |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Head Height | 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| Fastener Length | 1.519 INCHES NOMINAL IN |
| Shoulder Length | 0.171 INCHES MINIMUM AND 1.067 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3095 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.437 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.419 INCHES MINIMUM AND 0.435 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 |
|---|---|
| 12705-5C-17B PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5305-01-346-3725 is a Screw,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-346-3725 has 1 manufacturer part number on file: 12705-5C-17B (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 12705-5C-17B: Width Across Flats: 0.156 INCHES NOMINAL IN; Head Height: 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN; Fastener Length: 1.519 INCHES NOMINAL IN; Shoulder Length: 0.171 INCHES MINIMUM AND 1.067 INCHES MAXIMUM FIRST SHOULDER IN. 19 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.