The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-083-7160, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 17 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-083-7160 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.261 INCHES MINIMUM AND 1.394 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1189 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | PELLET OR STRIP THREADS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 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 E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.442 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 |
| Reference | Meaning |
|---|---|
| NAS1189-4T24K | 5/9 Secondary reference Huck International, Inc |
| NAS1189-4T24K | 5/9 Secondary reference Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc |
| NAS1189-4T24K | 5/9 Secondary reference Nd Industries Inc Div Eastern Division |
| NAS1189-4T24K | 5/9 Secondary reference Nor-Cal Supply Co |
| NAS1189-4T24K | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1189-4T24K | 5/9 Secondary reference Plastic and Metal Products Corporation |
| NAS1189-4T24K | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189-4T24K | 5/9 Secondary reference U.S. Government activity |
| NAS1189-4T24K | 5/9 Secondary reference Hi-Shear Corporation |
| NAS1189-4T24K | 5/9 Secondary reference U.S. Government activity |
| NAS1189-4T24K | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1189-4T24K | 5/9 Secondary reference F and C Sales Inc |
| NAS1189-4T24K | 5/9 Secondary reference Air Industries Co Inc |
| NAS1189-4T24K | 5/9 Secondary reference Long-Lok Llc |
| NAS1189-4T24K | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| NAS1189-4T24K | 5/9 Secondary reference U.S. Government activity |
| NAS1189-4T24K | 5/9 Secondary reference Apcom Inc |
NSN 5305-01-083-7160 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-083-7160: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.