The Screw,shoulder, cataloged under National Stock Number 5305-01-689-2610, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Inc Unbrako Div. Government technical data includes 18 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 | 5305-01-689-2610 |
| Primary Part Number | 12705-12C-12U |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies Inc Unbrako Div |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Head Height | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Fastener Length | 1.625 INCHES NOMINAL IN |
| Thread Length | 0.875 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | ASTM A574 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ALL MATERIAL RESPONSES OR ANSI/ASME B18.3 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | KNURLED NO. 5 |
| Thread Direction | RIGHT-HAND |
| Color | SILVER OVERALL |
| Surface Treatment | ZINC OVERALL |
| 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-12U PRIMARY | Sps Technologies Inc Unbrako Div (USA) |
| 31000-196 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5305-01-689-2610 is a Screw,shoulder, manufactured by Sps Technologies Inc Unbrako Div, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-689-2610 has 2 manufacturer part numbers on file: 12705-12C-12U (Sps Technologies Inc Unbrako Div), 31000-196 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 12705-12C-12U: Width Across Flats: 0.375 INCHES NOMINAL IN; Head Height: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Fastener Length: 1.625 INCHES NOMINAL IN; Thread Length: 0.875 INCHES NOMINAL IN. 18 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.