# NSN 5306-00-312-9612: Bolt, Close Tolerance

NSN 5306-00-312-9612 (also written 5306003129612; NIIN 00-312-9612) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5306-00-312-9612 (5306003129612)
- NIIN: 00-312-9612 (003129612)
- 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 |
| --- | --- | --- |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 36.0 AND ROCKWELL C MAXIMUM 41.0 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.375 |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.189 AND INCHES MAXIMUM 0.204 |
| MATT | MATERIAL | OVERALL STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4130 OR STEEL COMP 6150 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC 1ST MATERIAL RESPONSE -IL-S-5000 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-5626 OR MIL SPEC 3RD MATERIAL RESPONSE -IL-S-6049SJDE-IL-S-6758 OR MIL SPEC 5TH MATERIAL RESPONSE -IL-S-8503 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| AASB | FASTENER LENGTH | INCHES MINIMUM 2.476 AND INCHES MAXIMUM 2.496 |
| CSYM | SURFACE FINISH | BEARING SURFACE OF HEAD MICROINCHES 63.0 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| ANEE | GRIP LENGTH | INCHES MINIMUM 1.938 AND INCHES MAXIMUM 1.954 |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TYE 2 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.553 AND INCHES MAXIMUM 0.564 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.3733 AND INCHES MAXIMUM 0.3742 |
| AASA | THREAD LENGTH | INCHES MINIMUM 0.356 AND INCHES MAXIMUM 0.438 |
| FEAT | SPECIAL FEATURES | W/RETAINING ELEMENT ON SHANK |
| AASK | HEAD STYLE | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| MS27576-6-31 | 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/) |
| MS27576-6-31 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [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=5306003129612&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306003129612
- 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/5306-00-312-9612/
JSON: https://nsnexplorer.com/api/nsn/5306-00-312-9612.json