# NSN 5305-00-018-1657: Screw, Cap, Hexagon Head

NSN 5305-00-018-1657 (also written 5305000181657; NIIN 00-018-1657) is a screw, cap, hexagon head in Federal Supply Class 5305, Screws. 3 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5305-00-018-1657 (5305000181657)
- NIIN: 00-018-1657 (000181657)
- Item name: SCREW,CAP,HEXAGON HEAD
- 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 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 |
| --- | --- | --- |
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | INCHES MAXIMUM 0.688 |
| AASB | FASTENER LENGTH | INCHES MINIMUM 0.656 AND INCHES MAXIMUM 0.688 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES MINIMUM 0.272 AND INCHES MAXIMUM 0.291 |
| AATB | WIDTH BETWEEN FLATS | INCHES MINIMUM 0.612 AND INCHES MAXIMUM 0.625 |
| AHYM | NOMINAL THREAD DIAMETER | INCHES 0.438 |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 120000 |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 23.0 AND ROCKWELL C MAXIMUM 32.0 |
| CQHQ | MINIMUM YIELD STRENGTH | POUNDS PER SQUARE INCH 85000 |
| MATT | MATERIAL | OVERALL STEEL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE SAE GR 5 |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM OR ZINC |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC 1ST TREATMENT RESPONSE QQ--416,TY 2,CL 3 OR FED SPEC 2ND TREATMENT RESPONSE QQ-Z-325,TY 2,CL 3 |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY FASTENER LENGTH |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | TYPE 2 AND STYLE 10 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 181657 | 21450 | ARMY WEAPONS COMMAND ATTN AMSWE-REE-S | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 5305000181657 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| FFS85TYPE2STYLE10PGRADE5 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-09-01 | $5.48 | 116 | WILSON-GARNER CO | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305000181657) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-01 | [SPE4A626V350P](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305000181657) | SCREW, CAP, HEXAGON HEAD | WILSON-GARNER CO | $635.68 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305000181657&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305000181657
- 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/5305-00-018-1657/
JSON: https://nsnexplorer.com/api/nsn/5305-00-018-1657.json