The Screw,shoulder, cataloged under National Stock Number 5305-00-438-8760, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-438-8760 |
| Primary Part Number | GS553U08B3 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.495 INCHES NOMINAL IN |
| Fastener Length | 0.935 INCHES NOMINAL IN |
| Shoulder Length | 0.385 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.258 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.420 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 |
|---|---|
| 135191-2 | Huck International, Inc (USA) |
| 135191-2 | Fastener Technology Corp (USA) |
| GS553U08B3 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| DRBSS7500-8-B-3 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| DRB7500-8B3 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| Reference | Meaning |
|---|---|
| 135191-2 | 7/2 Vendor item drawing reference Raytheon Company |
| 115738-214 | 5/2 Secondary reference U.S. Government activity |
| DRB7500-8B3 | 5/9 Secondary reference U.S. Government activity |
| DRBSS7500-8-B-3 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-438-8760 is a Screw,shoulder, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-438-8760 has 5 manufacturer part numbers on file: 135191-2 (Huck International, Inc), 135191-2 (Fastener Technology Corp), GS553U08B3 (Northrop Grumman Systems Corporation), DRBSS7500-8-B-3 (Huck International, Inc. Div Huck Products Division), DRB7500-8B3 (Huck International, Inc. Div Huck Products Division).
Key specifications for GS553U08B3: Head Height: 0.495 INCHES NOMINAL IN; Fastener Length: 0.935 INCHES NOMINAL IN; Shoulder Length: 0.385 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.258 INCHES NOMINAL FIRST SHOULDER IN. 16 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.