The Screw,close Tolerance, cataloged under National Stock Number 5305-01-250-0641, 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 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through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-250-0641 |
| Primary Part Number | AIC985-4-10 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Fastener Length | 1.003 INCHES MINIMUM AND 1.053 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.368 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| 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 COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.350 INCHES MINIMUM AND 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 |
|---|---|
| H185-4-10 | Huck International, Inc (USA) |
| VT1694F4-10 | Howmet Global Fastening Systems Inc (USA) |
| 121558-4-A10P | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC985-4-10 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1166-4-10 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| C7985-4-10 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5305PL0783996 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C7985-4-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| C7985-4-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 121558-4-A10P | 5/2 Secondary reference U.S. Government activity |
| VT1694F4-10 | 5/2 Secondary reference U.S. Government activity |
| C7985-4-10 | 5/9 Secondary reference U.S. Government activity |
| C7985-4-10 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| SF117-4-10 | 5/9 Secondary reference Saturn Fasteners Inc |
| C7985-4-10 | 5/9 Secondary reference U.S. Government activity |
| H185-4-10 | 5/9 Secondary reference U.S. Government activity |
| AIC985-4-10P | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
NSN 5305-01-250-0641 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-250-0641 has 5 manufacturer part numbers on file: H185-4-10 (Huck International, Inc), VT1694F4-10 (Howmet Global Fastening Systems Inc), 121558-4-A10P (Sps Technologies, Llc Dba PB Fasteners), AIC985-4-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF1166-4-10 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for AIC985-4-10: Fastener Length: 1.003 INCHES MINIMUM AND 1.053 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.368 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL. 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.