# NSN 5306-01-664-5251: Bolt, Close Tolerance

NSN 5306-01-664-5251 (also written 5306016645251; NIIN 01-664-5251) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 1 manufacturer part number from 1 supplier is on record. No purchases are on record yet.

## Identification

- NSN: 5306-01-664-5251 (5306016645251)
- NIIN: 01-664-5251 (016645251)
- Item name: BOLT,CLOSE TOLERANCE
- Federal Supply Class: [FSC 5306 Bolts](https://nsnexplorer.com/fsc/5306/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES NOMINAL 0.594 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 6.2815 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES NOMINAL 0.281 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.865 AND INCHES MAXIMUM 0.877 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.5917 AND INCHES MAXIMUM 0.5927 |
| AAVA | POINT DIAMETER | INCHES MINIMUM 0.5500 AND INCHES MAXIMUM 0.5550 |
| ABQJ | POINT STYLE | — |
| AGAV | END ITEM IDENTIFICATION | B-52 AIRCRAFT |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.5625 |
| ANEE | GRIP LENGTH | INCHES NOMINAL 5.6875 |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 160000 |
| MATT | MATERIAL | OVERALL STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S 6349 OR ASSN STD 2ND MATERIAL RESPONSE A-S 6389 OR ASSN STD 3RD MATERIAL RESPONSE A-S 6415 OR ASSN STD 4TH MATERIAL RESPONSE A-S 6484 OR ASSN STD 5TH MATERIAL RESPONSE A-S 6322 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE TREATMENT RESPONSE A-S QQ--416, TYE II, CLASS 2 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| NAS6209-91Y | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306016645251&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306016645251
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/5306-01-664-5251/
JSON: https://nsnexplorer.com/api/nsn/5306-01-664-5251.json