The Screw,shoulder, cataloged under National Stock Number 5305-01-255-6552, 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 | 5305-01-255-6552 |
| Primary Part Number | 12705L5C8 |
| 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 | 0.500 INCHES NOMINAL IN |
| Shoulder Length | 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM ALL SHOULDERS IN |
| Shoulder Diameter | 0.281 INCHES NOMINAL ALL SHOULDERS IN |
| Thread Length | 0.317 INCHES MINIMUM AND 0.357 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 4 |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 56878-12705L5C8 MANUFACTURERS STANDARD |
| Locking Feature | STRIP THREADS |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNRC |
| Head Diameter | 0.419 INCHES MINIMUM AND 0.438 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 |
|---|---|
| 12705L5C8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5305-01-255-6552 is a Screw,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-255-6552 has 1 manufacturer part number on file: 12705L5C8 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 12705L5C8: Width Across Flats: 0.156 INCHES NOMINAL IN; Head Height: 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN; Shoulder Length: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM ALL SHOULDERS 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.