The Screw,close Tolerance, cataloged under National Stock Number 5305-01-669-9145, 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. Government technical data includes 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-669-9145 |
| Primary Part Number | C7984-4D28 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Fastener Length | 2.105 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS672 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.370 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST SHOULDER IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.750 INCHES NOMINAL IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.959 INCHES MINIMUM AND 1.979 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.447 INCHES MINIMUM AND 0.507 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 |
|---|---|
| C7984-4D28 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| C7984-4D28 | Huck International, Inc (USA) |
| C7984-4D28 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C7984-4D28 | Howmet Global Fastening Systems Inc (USA) |
| C7984-4D28 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| C7984-4D28 | 3/2 Design control — primary reference U.S. Government activity |
| C7984-4D28 | 7/2 Vendor item drawing reference U.S. Government activity |
| C7984-4D28 | 5/2 Secondary reference U.S. Government activity |
| C7984 | D/9 Drawing number reference only U.S. Government activity |
NSN 5305-01-669-9145 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-669-9145 has 5 manufacturer part numbers on file: C7984-4D28 (Sps Technologies, Llc Dba PB Fasteners), C7984-4D28 (Huck International, Inc), C7984-4D28 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), C7984-4D28 (Howmet Global Fastening Systems Inc), C7984-4D28 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
6 possible matches (shared part number, not a government interchangeability claim): 5305-01-692-4567, 5305-01-692-5440, 5305-01-700-1459. Verify interchangeability with system specifications before substitution.
Key specifications for C7984-4D28: Fastener Length: 2.105 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS672 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.370 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST SHOULDER IN. 19 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.