# NSN 5306-01-216-5691: Bolt, Close Tolerance

NSN 5306-01-216-5691 (also written 5306012165691; NIIN 01-216-5691) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 5 manufacturer part numbers from 5 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5306-01-216-5691 (5306012165691)
- NIIN: 01-216-5691 (012165691)
- 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 C: needs engineering source approval; other sources must qualify first. (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 MINIMUM 0.533 AND INCHES MAXIMUM 0.634 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 1.552 AND INCHES MAXIMUM 1.572 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.320 AND INCHES MAXIMUM 0.340 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.305 AND INCHES MAXIMUM 0.313 |
| AATC | EXTENDED WASHER DIAMETER | INCHES MINIMUM 0.428 AND INCHES MAXIMUM 0.448 |
| AATD | EXTENDED WASHER THICKNESS | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.070 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.2494 AND INCHES MAXIMUM 0.2499 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.250 |
| ANEE | GRIP LENGTH | INCHES MINIMUM 0.868 AND INCHES MAXIMUM 0.898 |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 130000 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 24.0 AND ROCKWELL C MAXIMUM 35.0 |
| CQHQ | MINIMUM YIELD STRENGTH | POUNDS PER SQUARE INCH 85000 |
| CRTL | CRITICALITY CODE JUSTIFICATION | SUPP |
| CSYM | SURFACE FINISH | GRIP MICROINCHES 32.0 |
| CSYM | SURFACE FINISH | BEARING SURFACE OF HEAD MICROINCHES 32.0 |
| CSYM | SURFACE FINISH | THREADS MICROINCHES 32.0 |
| FEAT | SPECIAL FEATURES | UNDERCUT 0.221 INCH MIN,0.231 INCH MAX DIA.; 0.050 INCH MIN,0.060 INCH MAX LENGTH |
| MATT | MATERIAL | OVERALL IRON ALLOY 660 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5731 |
| SUPP | SUPPLEMENTARY FEATURES | FAILURE COULD RESULT IN LOSS OR DAMAGE TO VEHICLE OR WEAPONS SYSTEM, OR DEATH OR INJURY TO PERSONNEL |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 5306PL1498550 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9111-17 | 0U583 | SAE INTERNATIONAL DBA SAE INTERNATIONAL | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9111-17 | 52661 | RTX CORPORATION DIV PRATT & WHITNEY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9111-17 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| MS9111-17 | 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=5306012165691&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306012165691
- 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/5306-01-216-5691/
JSON: https://nsnexplorer.com/api/nsn/5306-01-216-5691.json