The Screw,shoulder, cataloged under National Stock Number 5305-01-690-7500, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 20 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 | 5305-01-690-7500 |
| Primary Part Number | 77D616427 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Head Height | 0.62 INCHES NOMINAL IN |
| Fastener Length | 0.85 INCHES NOMINAL IN |
| Shoulder Length | 0.162 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Length | 0.260 INCHES NOMINAL SECOND SHOULDER IN |
| Surface Treatment Document and Classification | ASTMA967 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.437 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.312 INCHES NOMINAL SECOND SHOULDER IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | ASTMA582 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA276 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Chamfer Angle | 45.0 DEGREES NOMINAL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.560 INCHES NOMINAL 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 |
|---|---|
| 77D616427 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 77D616427P001 | Lockheed Martin Australia Pty Ltd (AUS) |
NSN 5305-01-690-7500 is a Screw,shoulder, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-690-7500 has 2 manufacturer part numbers on file: 77D616427 (Lockheed Martin Corporation Div Rms), 77D616427P001 (Lockheed Martin Australia Pty Ltd).
Key specifications for 77D616427: Head Height: 0.62 INCHES NOMINAL IN; Fastener Length: 0.85 INCHES NOMINAL IN; Shoulder Length: 0.162 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Length: 0.260 INCHES NOMINAL SECOND SHOULDER IN. 20 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.