The Plate,armor,seat,shoulder, cataloged under National Stock Number 1680-00-977-1971, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-977-1971 |
| Item Name | Plate,armor,seat,shoulder |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY QQ-A-250/4 COMP 2024 COND T351,TILE,CERAMIC,HIGH STRENGTH,COMMERCIAL GRADE,CLOTH,NYLON,BALLISTIC MIL-C-12369,DIM.,17.806 IN. NOM LG RIGHT SIDE W/9.75 DEG TAPER TOWARD TOP,17.100 IN. NOM LG LEFT SIDEW/5.0 DEG TAPER TOWARD BOTTOM,7.370 IN. NOM W BOTTOM W/5.5 DEG TAPER TOWARD LEFT,5.810 IN. NOM W TOP,0.735 IN. MAX O/A THICK,0.485 IN. NOM TILE THICKNESS,0.250 IN. NOM ALUMINUM ALLOYTHICKNESS,FOUR THREADED HOLES WITH 0.250-20 UNC 3B THREADS,TWO LOCATED AT1.500 IN. FROM TOP 2.000 AND 3.250 IN.FROM LEFT SIDE,TWO LOCATED VERTICALLY 5.000 IN. FROM TOP LEFT HOLE W/3.000 IN. CENTER TO CENTER DISTANCE,ALUMINUMAND TILE BONDED W/PROSEAL 890B1/2,COMPOSITE ARMOR WEIGHT 10.5 PSF MAX,NEOPRENE CHANNEL 0.500 IN. DEEP,0.700 IN. INSIDE WIDTH ATTACHED TO ALL EDGESUSED ON INBOARD PILOT SEAT ON UH-1B,UH-1D IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 178040-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-00-977-1971 is a Plate,armor,seat,shoulder, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-00-977-1971: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-250/4 COMP 2024 COND T351,TILE,CERAMIC,HIGH STRENGTH,COMMERCIAL GRADE,CLOTH,NYLON,BALLISTIC MIL-C-12369,DIM.,17.806 IN. NOM LG RIGHT SIDE W/9.75 DEG TAPER TOWARD TOP,17.100 IN. NOM LG LEFT SIDEW/5.0 DEG TAPER TOWARD BOTTOM,7.370 IN. NOM W BOTTOM W/5.5 DEG TAPER TOWARD LEFT,5.810 IN. NOM W TOP,0.735 IN. MAX O/A THICK,0.485 IN. NOM TILE THICKNESS,0.250 IN. NOM ALUMINUM ALLOYTHICKNESS,FOUR THREADED HOLES WITH 0.250-20 UNC 3B THREADS,TWO LOCATED AT1.500 IN. FROM TOP 2.000 AND 3.250 IN.FROM LEFT SIDE,TWO LOCATED VERTICALLY 5.000 IN. FROM TOP LEFT HOLE W/3.000 IN. CENTER TO CENTER DISTANCE,ALUMINUMAND TILE BONDED W/PROSEAL 890B1/2,COMPOSITE ARMOR WEIGHT 10.5 PSF MAX,NEOPRENE CHANNEL 0.500 IN. DEEP,0.700 IN. INSIDE WIDTH ATTACHED TO ALL EDGESUSED ON INBOARD PILOT SEAT ON UH-1B,UH-1D IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1680-00-977-1971 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.