# NSN 5306-01-179-0902: Bolt, Close Tolerance

NSN 5306-01-179-0902 (also written 5306011790902; NIIN 01-179-0902) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 4 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5306-01-179-0902 (5306011790902)
- NIIN: 01-179-0902 (011790902)
- 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 P: the government does not own the rights to the data needed for more sources. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES NOMINAL 1.000 |
| AASB | FASTENER LENGTH | INCHES NOMINAL 2.312 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.378 AND INCHES MAXIMUM 0.398 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.430 AND INCHES MAXIMUM 0.439 |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.343 AND INCHES MAXIMUM 0.353 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.375 |
| ANEE | GRIP LENGTH | INCHES NOMINAL 1.313 |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 280000 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, DOUBLE HEXAGON, TENSION, 280,000 PSI MINIMUM TENSTILE STRENGTH, 450 DEGRESS F |
| FEAT | SPECIAL FEATURES | VACUUM CADMIUM PLATED;HEAT TREAT 280,000 PSI MINIMUM ULTIMATE TENSTILE STRENGTH, RC52 MINIMUM FOR MARAGING, RC53 MINIMUM FOR AERMET;MAGNETIC PARTICLE INSPECT 100 PERCENT PER ASTM E 1444;UNDRILLED HEAD;HEAD OF BOLT TO BE FORGED;THREAD SHALL BE ROLLED AFTER HEAT TREATMENT;FATIGUE, MINIMUM TENSION-TENSION FATIGUE LOADS, HIGH LOADS EQUALS 11,800 LBS, LOW LOAD EQUALS 1,180 LBS;HIGH FATIGUE STRENGTH BASED ON 48PERCENT OF MIN. TENSTILE STRENGTH AND 10 PERCENT OF HIGH TENSTILE STRENGTH |
| MATT | MATERIAL | OVERALL STEEL COMP 305 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S5514 OR ASSN STD SINGLE MATERIAL RESPONSE A-S6532 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL MIL SPEC SINGLE TREATMENT RESPONSE -IL-C-6887,TY2,CL2 |
| THSD | THREAD SERIES DESIGNATOR | UNF |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| HS6051-6-21 | 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HS6051-6-21 | 16258 | SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| HS6051-6-21 | 8V613 | THE BOEING COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SLB361-6-21 | 16258 | SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK | [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=5306011790902&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5306011790902
- 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/5306-01-179-0902/
JSON: https://nsnexplorer.com/api/nsn/5306-01-179-0902.json