The Screw,close Tolerance, cataloged under National Stock Number 5305-01-692-5440, 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 23 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-692-5440 |
| Primary Part Number | AIC984B4-8R |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OVERALL |
| Head Height | 0.108 INCHES NOMINAL IN |
| Fastener Length | 0.855 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ION VAPOR DEPOSITED ALUMINUM COATING PER MIL-C-83488,TY II,CL 3 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-L-46010,TY I MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.370 INCHES NOMINAL IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | H11 ALLOY STEEL PER AMS6487 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Features Provided | DRY FILM LUBRICANT |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.500 INCHES NOMINAL IN |
| Grip Diameter | 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND LUBRICANT 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 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 121557-4-A8BX | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VT1693AS4-8X | Howmet Global Fastening Systems Inc (USA) |
| AIC984B4-8R PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| H044B4-8R PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 121557B4-8R | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 121557B4-8R | 5/9 Secondary reference U.S. Government activity |
| 121557-4-A8BX | 3/2 Design control — primary reference U.S. Government activity |
| C7984B4-8R | 7/2 Vendor item drawing reference U.S. Government activity |
| VT1693AS4-8X | 3/2 Design control — primary reference U.S. Government activity |
| C7984 | D/9 Drawing number reference only U.S. Government activity |
| PBF1165B4-8R | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| VT1693B4-8R | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| VT1693B4-8R | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-692-5440 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 5305-01-692-5440 has 4 manufacturer part numbers on file: 121557-4-A8BX (Sps Technologies, Llc Dba PB Fasteners), VT1693AS4-8X (Howmet Global Fastening Systems Inc), AIC984B4-8R (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), H044B4-8R (Huck International, Inc).
4 possible matches (shared part number, not a government interchangeability claim): 5305-01-700-1459, 5305-01-700-9288, 5305-01-706-5519. Verify interchangeability with system specifications before substitution.
Key specifications for AIC984B4-8R: Surface Finish: 32.0 MICROINCHES OVERALL; Head Height: 0.108 INCHES NOMINAL IN; Fastener Length: 0.855 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ION VAPOR DEPOSITED ALUMINUM COATING PER MIL-C-83488,TY II,CL 3 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-L-46010,TY I MIL SPEC 2ND TREATMENT RESPONSE OVERALL. 23 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.