The Screw,machine, cataloged under National Stock Number 5305-01-693-4328, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-693-4328 |
| Primary Part Number | A1C618B4-9 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.063 INCHES NOMINAL IN |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.9655 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.403 INCHES NOMINAL IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP H11 |
| 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 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.399 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 |
|---|---|
| SF116B4-9 | Saturn Fasteners Inc (USA) |
| 93926B4-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GS1009B4-9 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| VT10021B4-9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| A1C618B4-9 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| C20645B4-9 | 7/2 Vendor item drawing reference U.S. Government activity |
| 93926B4-9 | 5/2 Secondary reference U.S. Government activity |
| C20645 | D/9 Drawing number reference only U.S. Government activity |
NSN 5305-01-693-4328 is a Screw,machine, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-693-4328 has 5 manufacturer part numbers on file: SF116B4-9 (Saturn Fasteners Inc), 93926B4-9 (Sps Technologies, Llc Dba PB Fasteners), GS1009B4-9 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), VT10021B4-9 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), A1C618B4-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for A1C618B4-9: Head Height: 0.063 INCHES NOMINAL IN; Screw Surface Treatment: ALUMINUM; Fastener Length: 0.9655 INCHES NOMINAL IN; Screw Material Document and Classification: AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE. 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.