# NSN 5305-01-557-0551: Screw, Cap, Hexagon Head

NSN 5305-01-557-0551 (also written 5305015570551; NIIN 01-557-0551) is a screw, cap, hexagon head in Federal Supply Class 5305, Screws. 12 manufacturer part numbers from 9 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 5305-01-557-0551 (5305015570551)
- NIIN: 01-557-0551 (015570551)
- 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 L: annual buy value is below the screening threshold. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | MILLIMETERS MAXIMUM 30.0 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | MILLIMETERS MAXIMUM 7.8 |
| AATB | WIDTH BETWEEN FLATS | MILLIMETERS MAXIMUM 18.0 |
| AGAV | END ITEM IDENTIFICATION | MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MRAP - COUGAR CAT1 A2; MRAP - COUGAR CAT1 A1; MRAP COUGAR EGRESS |
| AHYM | NOMINAL THREAD DIAMETER | MILLIMETERS 12.0 |
| CQQR | THREAD PITCH IN MILLIMETERS | 1.8 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, HHCS METRIC CL10.9 ZN |
| FEAT | SPECIAL FEATURES | M12-1.75 X 45MM 10.9 DIN 933 FULL THRD ZINC HEX CAP SCREW |
| MATT | MATERIAL | OVERALL STEEL COMP 1090 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE AST- 568; CLASS 10.9 STEEL |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| SFTT | SURFACE TREATMENT | OVERALL DICHROMATE SODIUM |
| THSD | THREAD SERIES DESIGNATOR | M |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 0154004 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 01554004 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 12419954-137 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 12759-00134 | 0Y3H3 | FASTENAL COMPANY DBA FASTENAL CO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2002 | 8E384 | ALLEN AND WEBB | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 0B9F4 | RKR TECHNOLOGIES, LTD. DBA RKR TECHNOLOGIES LTD DIV ROCKET AIR SUPPLY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 3T063 | MOTOR CITY FASTENERS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 4JEL0 | REXEL USA, INC. DBA GEXPRO DIV GEXPRO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 57550 | RELLI TECHNOLOGY, INC DBA RELLI TECHNOLOGY INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3011095 | 7W356 | GENERAL DYNAMICS LAND SYSTEMS INC. DIV GDLS GLOBAL LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| S000012 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-24 | [SPE4A626V190C](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305015570551) | SCREW, CAP, HEXAGON H | — | $698.94 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5305015570551&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305015570551
- 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/5305-01-557-0551/
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