The Screw,machine, cataloged under National Stock Number 5305-01-255-4607, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-255-4607 |
| Primary Part Number | GB510CW6-9 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.061 INCHES MINIMUM AND 1.091 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.491 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE SET |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.515 INCHES MINIMUM AND 0.566 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 |
|---|---|
| PBF1320-6-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GB510CW6-9 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| HR215-6-9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HR215-6-9 | Hi-Shear Corporation (USA) |
| SC1828-6-9 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 122773-6-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-255-4607 is a Screw,machine, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-255-4607 has 5 manufacturer part numbers on file: PBF1320-6-9 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GB510CW6-9 (Northrop Grumman Systems Corporation), HR215-6-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HR215-6-9 (Hi-Shear Corporation), SC1828-6-9 (Howmet Global Fastening Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 5640-01-319-2376. Verify interchangeability with system specifications before substitution.
Key specifications for GB510CW6-9: Screw Surface Treatment: PASSIVATE; Fastener Length: 1.061 INCHES MINIMUM AND 1.091 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.491 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN. 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.