The Screw,close Tolerance, cataloged under National Stock Number 5305-01-548-6605, 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20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-548-6605 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 2.028 INCHES MINIMUM AND 2.058 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TY2CL2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416, TY1CL2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.543 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AAMS6382 ASSN STD 1ST MATERIAL RESPONSE AND AMS6349 ASSN STD 2ND MATERIAL RESPONSE AND 6322 ASSN STD 3RD MATERIAL RESPONSE AND AMS6415 ASSN STD 4TH MATERIAL RESPONSE AND AMS6484 ASSN STD 5TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.500 INCHES NOMINAL IN |
| Grip Diameter | 0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE III |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 4140 AND STEEL COMP 4340 AND STEEL COMP 6150 AND STEEL COMP 8735 AND STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 1.110 INCHES NOMINAL 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 |
|---|---|
| NAS1210-24D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-548-6605 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-548-6605: Fastener Length: 2.028 INCHES MINIMUM AND 2.058 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TY2CL2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416, TY1CL2 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 0.543 INCHES NOMINAL IN; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM 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.