# NSN 5306-00-180-0539: Bolt, Close Tolerance

NSN 5306-00-180-0539 (also written 5306001800539; NIIN 00-180-0539) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 2 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5306-00-180-0539 (5306001800539)
- NIIN: 00-180-0539 (001800539)
- 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 |
| --- | --- | --- |
| AASB | FASTENER LENGTH | INCHES MINIMUM 6.688 AND INCHES MAXIMUM 6.734 |
| AASK | HEAD STYLE | — |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | FIRST HOLE INCHES MINIMUM 1.031 AND INCHES MAXIMUM 1.062 |
| MATT | MATERIAL | OVERALL STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 0.610 AND INCHES MAXIMUM 0.687 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC ALL TREATMENT RESPONSES QQ--416,TY 2,CL 3 |
| AAJD | THREAD CLASS | 3A |
| ANEE | GRIP LENGTH | INCHES MINIMUM 0.547 AND INCHES MAXIMUM 0.578 |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 125000 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 26.0 AND ROCKWELL C MAXIMUM 32.0 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.3737 AND INCHES MAXIMUM 0.3742 |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | FIRST HOLE INCHES MINIMUM 0.106 AND INCHES MAXIMUM 0.116 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.437 |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.203 AND INCHES MAXIMUM 0.235 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.553 AND INCHES MAXIMUM 0.565 |
| THSD | THREAD SERIES DESIGNATOR | UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| AN176-65 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| B6812 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-17 | $189.00 | 22 | STANDARD AERO PARTS, INC | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306001800539) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-17 | [SPE4A726V4553](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306001800539) | BOLT, CLOSE TOLERANCE | STANDARD AERO PARTS, INC | $4,158.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306001800539&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306001800539
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- 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/5306-00-180-0539/
JSON: https://nsnexplorer.com/api/nsn/5306-00-180-0539.json