The Screw,shoulder, cataloged under National Stock Number 5305-01-394-5975, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-394-5975 |
| Primary Part Number | 12705-12C-52 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Head Height | 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Fastener Length | 4.125 INCHES NOMINAL IN |
| Shoulder Length | 3.157 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.747 INCHES MINIMUM AND 0.748 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.693 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | OIL OVERALL |
| Surface Treatment | OXIDE HEAD |
| Surface Treatment | OXIDE THREADS |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNRC |
| Head Diameter | 0.977 INCHES MINIMUM AND 1.000 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 |
|---|---|
| 12705-12C-52 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 8U56106-114 | 5/9 Secondary reference Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory |
NSN 5305-01-394-5975 is a Screw,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-394-5975 has 1 manufacturer part number on file: 12705-12C-52 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 12705-12C-52: Width Across Flats: 0.375 INCHES NOMINAL IN; Head Height: 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 4.125 INCHES NOMINAL IN; Shoulder Length: 3.157 INCHES NOMINAL FIRST SHOULDER IN. 21 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.