FSG: 84 — Clothing, Individual Equipment, and Insignia
General Description
The Undershirt Flame Resistant, cataloged under National Stock Number 8415-01-577-4994, is classified within Federal Supply Class 8415 (Clothing, Special Purpose) of the Clothing, Individual Equipment, and Insignia group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
8415-01-577-4994
Item Name
Undershirt Flame Resistant
FSC / FSG
8415 / 84 — Clothing, Special Purpose
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
8415-01-577-4998POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5030POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5071POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5107POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5111POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5115POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5124POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5304POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5317POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
8415-01-577-5318POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
F-BL-TOP-MR
3/1Design control — primary reference
Atlantic Diving Supply, Inc. Dba Ads
Related Parts
8415-01-577-4998POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5030POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5071POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5107POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5111POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5115POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5124POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5304POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5317POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5318POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
8415-01-577-5331POSSIBLE MATCH
UNDERSHIRT FLAME RESISTANT
Frequently Asked Questions
What is NSN 8415-01-577-4994?
NSN 8415-01-577-4994 is a Undershirt Flame Resistant, classified under FSC 8415, Clothing, Special Purpose. Status: active.
What NSN replaces 8415-01-577-4994?
11 possible matches (shared part number, not a government interchangeability claim): 8415-01-577-4998, 8415-01-577-5030, 8415-01-577-5071. Verify interchangeability with system specifications before substitution.
What are the specifications of 8415-01-577-4994?
Key specifications for 8415-01-577-4994: Special Features: SIZE-X-SMALL REGULAR; UNDERSHIRT, LONG SPLEEVE, BASE LAYER, FLAME RESISTANT; MOISTURE WICKING, SILK WEIGHT, FOILAGE GREEN 504, CREW NECK WITH CONTOURED TAILS AND CUFFS, PART OF FREE. 0 specifications are documented in the U.S. Government catalog.
Is NSN 8415-01-577-4994 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.