The Screw,machine, cataloged under National Stock Number 5305-01-398-4077, 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 Div PB Fasteners. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-398-4077 |
| Primary Part Number | PBF1510-4-9 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.172 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.147 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.578 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Screw Material | NICKEL ALLOY 718 |
| Internal Drive Style | TORQUE SET |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| GB511GK4-9 | Northrop Grumman Systems Corporation (USA) |
| PBF1510-4-9 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCL0011-4-9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| 124537-4-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-398-4077 is a Screw,machine, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-398-4077 has 3 manufacturer part numbers on file: GB511GK4-9 (Northrop Grumman Systems Corporation), PBF1510-4-9 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCL0011-4-9 (Valley-Todeco, Inc. Dba Arconic Fastening Systems).
Key specifications for PBF1510-4-9: Head Height: 0.172 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 1.147 INCHES NOMINAL IN; Screw Material Document and Classification: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE. 15 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.