# NSN 5305-01-443-8437: Screw, Tapping

NSN 5305-01-443-8437 (also written 5305014438437; NIIN 01-443-8437) is a screw, tapping in Federal Supply Class 5305, Screws. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5305-01-443-8437 (5305014438437)
- NIIN: 01-443-8437 (014438437)
- Item name: SCREW,TAPPING
- 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 |
| --- | --- | --- |
| AASB | FASTENER LENGTH | INCHES NOMINAL 0.750 |
| AASK | HEAD STYLE | — |
| AASU | HEAD HEIGHT | INCHES NOMINAL 0.264 |
| AATB | WIDTH BETWEEN FLATS | INCHES NOMINAL 0.500 |
| AATC | EXTENDED WASHER DIAMETER | INCHES MINIMUM 0.624 AND INCHES MAXIMUM 0.676 |
| AATD | EXTENDED WASHER THICKNESS | INCHES MINIMUM 0.035 AND INCHES MAXIMUM 0.055 |
| ABQZ | INTERNAL DRIVE STYLE | — |
| CBBL | FEATURES PROVIDED | CASE-HARDENED |
| CQFM | HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 45.0 AND ROCKWELL C MAXIMUM 50.0 |
| CRGF | NONMACHINE THREAD STYLE | — |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | INCHES 0.312 |
| MATT | MATERIAL | OVERALL STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 |
| SFTT | SURFACE TREATMENT | OVERALL ZINC AND CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE TREATMENT RESPONSE AST- B633 |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | TYPE F |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 12377969-2 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| FF-S-107 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | [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=5305014438437&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5305014438437
- 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/5305-01-443-8437/
JSON: https://nsnexplorer.com/api/nsn/5305-01-443-8437.json