# NSN 5305-01-169-8255: Screw, Close Tolerance

NSN 5305-01-169-8255 (also written 5305011698255; NIIN 01-169-8255) is a screw, close tolerance in Federal Supply Class 5305, Screws. 5 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5305-01-169-8255 (5305011698255)
- NIIN: 01-169-8255 (011698255)
- Item name: SCREW,CLOSE TOLERANCE
- Federal Supply Class: [FSC 5305 Screws](https://nsnexplorer.com/fsc/5305/)
- 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 0.306 AND INCHES MAXIMUM 0.357 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 2.978 AND INCHES MAXIMUM 2.998 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.157 AND INCHES MAXIMUM 0.172 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.492 AND INCHES MAXIMUM 0.502 |
| AAUM | LOCKING FEATURE | GRIP DETENT BALL |
| AAUR | GRIP DIAMETER | INCHES MINIMUM 0.3112 AND INCHES MAXIMUM 0.3117 |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | FIRST HOLE INCHES MINIMUM 0.076 AND INCHES MAXIMUM 0.086 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.312 |
| ANEE | GRIP LENGTH | INCHES MINIMUM 2.500 AND INCHES MAXIMUM 2.516 |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 63000 |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | FIRST HOLE INCHES MINIMUM 2.865 AND INCHES MAXIMUM 2.885 |
| CSYM | SURFACE FINISH | BEARING SURFACE OF HEAD MICROINCHES 32.0 |
| CSYM | SURFACE FINISH | GRIP MICROINCHES 32.0 |
| MATT | MATERIAL | SPRING STEEL COMP 631 OR STEEL COMP 302 |
| MATT | MATERIAL | FASTENER STEEL COMP 632 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5629 |
| SFTT | SURFACE TREATMENT | OVERALL PASSIVATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--35 |
| THSD | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| SS5112-540 | 16258 | SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5112-540 | 73197 | HI-SHEAR CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5112-540 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5112-540 | 84256 | AVIBANK MFG., INC. DBA AVIBANK MANUFACTURING INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| SS5112-540 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-28 | [SPE4A626PAT23](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011698255) | SCREW, CLOSE TOLERANCE | — | $3,589.10 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305011698255&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305011698255
- 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/5305-01-169-8255/
JSON: https://nsnexplorer.com/api/nsn/5305-01-169-8255.json