# NSN 8475-01-446-2423: Shell, Subassembly, Flyers Helmet

NSN 8475-01-446-2423 (also written 8475014462423; NIIN 01-446-2423) is a shell, subassembly, flyers helmet in Federal Supply Class 8475, Specialized Flight Clothing and Accessories. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 8475-01-446-2423 (8475014462423)
- NIIN: 01-446-2423 (014462423)
- Item name: SHELL,SUBASSEMBLY,FLYERS HELMET
- Federal Supply Class: [FSC 8475 Specialized Flight Clothing and Accessories](https://nsnexplorer.com/fsc/8475/)
- Federal Supply Group: [FSG 84](https://nsnexplorer.com/group/84/)
- Acquisition method suffix code: AMSC C: needs engineering source approval; other sources must qualify first. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| FEAT | SPECIAL FEATURES | HELMET SHELL SUBASSEMBLY; USED TOASSEMBLE THE 81D5330-8 LARGE, HGU-55/PLIGHTWEIGHT FLYERS HELMET; MADE FROM GRAPHITE FABRIC, CARBON FIBER YARN AND ARIMID FABRIC; SAME AS THE 81D5331-2 SHELL SUBASSEMBLY EXCEPT MATERIAL WEIGHT IS 345 GRAMS (0.75 LBS) LIGHTER |
| HUES | COLOR | GRAY/GREY |
| MATT | MATERIAL | PLASTIC |
| PGCD | PROCUREMENT GROUP CODE | 02519 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 81D5331-20 | 97427 | GENTEX CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 81D5331-20 | 98750 | SAN ANTONIO AIR LOGISTICS CENTER | [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=8475014462423&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=8475014462423
- 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/8475-01-446-2423/
JSON: https://nsnexplorer.com/api/nsn/8475-01-446-2423.json