The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-610-6743, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-610-6743 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.500 INCHES NOMINAL IN |
| Head Height | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Fastener Length | 1.50 INCHES NOMINAL IN |
| Thread Length | 0.25 INCHES NOMINAL IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM FASTENER |
| Material Document and Classification | CL 1 ELEMENT ALLOY STEEL PER MIL-F-8961 MIL SPEC 1ST MATERIAL RESPONSE OR CL 1 ELEMENT HIGH TEMP PLASTIC PER MIL-F-8961 MIL SPEC 2ND MATERIAL RESPONSE OR CL 2 ELEMENT CORROSION AND HEAT RESISTANT STEEL PER MIL-F-8961 MIL SPEC 3RD MATERIAL RESPONSE LOCKING FEATURE |
| Material Document and Classification | NI 500 QQ-N-286 PER ASTM F468 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81349-MIL-DTL-1222 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | S STYLE AND N FINISH AND 10AND24 SIZE AND CAND3 CLASS AND NC GRADE |
| Locking Feature | SELF-LOCKING LOCKING FEATURE |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 11 |
| Material | NICKEL ALLOY 500 FASTENER |
| Material | STEEL OR PLASTIC OR STEEL CORROSION RESISTING LOCKING FEATURE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.921 INCHES MINIMUM AND 0.938 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 |
|---|---|
| M1222SN10C324NCLN | 2/2 Government specification standardization U.S. Government activity |
| 0.82511UNC3A1.50T2G500SAA | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-610-6743 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-610-6743: Width Across Flats: 0.500 INCHES NOMINAL IN; Head Height: 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Fastener Length: 1.50 INCHES NOMINAL IN; Thread Length: 0.25 INCHES NOMINAL IN. 22 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.