The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-367-9272, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lee Aerospace Products, Inc. Dba Lee Aerospace Products Inc. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-367-9272 |
| Primary Part Number | NAS6210-52 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lee Aerospace Products, Inc. Dba Lee Aerospace Products Inc |
| Status | ACTIVE |
| Head Height | 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Fastener Length | 3.736 INCHES MINIMUM AND 3.766 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.626 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS6210 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM IN |
| Width Between Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Grip Diameter | 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Locking Feature | PATCH OR PELLET OR STRIP LOCKING FEATURE |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| Material | STEEL COMP 4340 OR STEEL COMP 8740 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| NAS6210-52 | Lee Aerospace Products, Inc. Dba Lee Aerospace Products Inc (USA) |
| NAS6210-52 | Quality Socket Screw Manufacturing Corp (USA) |
| NAS6210-52 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NAS6210-52 | Aerospace Manufacturing Corporation Dba Aerospace Manufacturing Inc (USA) |
| NAS6210-52 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| NAS6210-52 | Northwest Automatic Products Inc Sub of Dola International Corp (USA) |
| Reference | Meaning |
|---|---|
| NAS6210-52 | 5/2 Secondary reference U.S. Government activity |
| NAS6210-52 | 5/2 Secondary reference U.S. Government activity |
| NAS6210-52 | 5/9 Secondary reference A. R. Machining, Inc Dba a R Machining Inc |
| NAS6210-52 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-367-9272 is a Bolt,close Tolerance, manufactured by Lee Aerospace Products, Inc. Dba Lee Aerospace Products Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-367-9272 has 6 manufacturer part numbers on file: NAS6210-52 (Lee Aerospace Products, Inc. Dba Lee Aerospace Products Inc), NAS6210-52 (Quality Socket Screw Manufacturing Corp), NAS6210-52 (Sps Technologies, Llc Dba PB Fasteners), NAS6210-52 (Aerospace Manufacturing Corporation Dba Aerospace Manufacturing Inc), NAS6210-52 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 1 more.
Key specifications for NAS6210-52: Head Height: 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN; Fastener Length: 3.736 INCHES MINIMUM AND 3.766 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment Document and Classification: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER. 25 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.