# NSN 5306-01-068-1303: Bolt, Ribbed Shoulder

NSN 5306-01-068-1303 (also written 5306010681303; NIIN 01-068-1303) is a bolt, ribbed shoulder in Federal Supply Class 5306, Bolts. 3 manufacturer part numbers from 3 suppliers are on record. The government has 1 open solicitation for it.

## Identification

- NSN: 5306-01-068-1303 (5306010681303)
- NIIN: 01-068-1303 (010681303)
- Item name: BOLT,RIBBED SHOULDER
- 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 2026-10-13)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MINIMUM 1.200 AND INCHES MAXIMUM 1.300 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 3.541 AND INCHES MAXIMUM 3.601 |
| AASK | HEAD STYLE | — |
| AASL | HEAD DIAMETER | INCHES NOMINAL 1.310 |
| AASU | HEAD HEIGHT | INCHES NOMINAL 0.310 |
| AATN | SHOULDER DIAMETER | FIRST SHOULDER INCHES MINIMUM 0.995 AND INCHES MAXIMUM 1.005 |
| AATX | SHOULDER LENGTH | FIRST SHOULDER INCHES NOMINAL 1.160 |
| AAVP | RIB MAJOR DIAMETER | INCHES MINIMUM 0.995 AND INCHES MAXIMUM 1.005 |
| AAVQ | RIB LENGTH | INCHES MINIMUM 1.040 AND INCHES MAXIMUM 1.100 |
| AAVR | DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | INCHES MINIMUM 0.060 AND INCHES MAXIMUM 0.120 |
| AAVT | RIB MINOR DIAMETER | INCHES MINIMUM 0.880 AND INCHES MAXIMUM 0.930 |
| AAVU | RIB QUANTITY | 28 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.875 |
| CMLP | THREAD QUANTITY PER INCH | 14 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 40.0 AND ROCKWELL C MAXIMUM 46.0 |
| CWYB | SHOULDER SHAPE | FIRST SHOULDER RIBBED |
| MATT | MATERIAL | OVERALL STEEL COMP 8637 OR STEEL COMP 8640 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD ALL MATERIAL RESPONSES AST- A322 OR ASSN STD ALL MATERIAL RESPONSES AST- A331 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 2 CL 3 |
| THSD | THREAD SERIES DESIGNATOR | UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12274571 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5306010681303 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5306PL2351658 | 9009H | JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Open solicitations

| Solicitation | Quantity | Closes | Link |
| --- | --- | --- | --- |
| SPE4A6-27-T-2057 | 2,012 | 2026-10-20 | [DIBBS](https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306010681303&category=nsn) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5306010681303&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306010681303
- 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/5306-01-068-1303/
JSON: https://nsnexplorer.com/api/nsn/5306-01-068-1303.json