The Seal,exhaust Duct, cataloged under National Stock Number 2520-01-123-6783, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-123-6783 |
| Primary Part Number | 12311977-1 |
| Item Name | Seal,exhaust Duct |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | STAINLESS STEEL 0.025 IN. LG.,FIRST LEG 1.000 IN. WIDE TWO NOTCHES 1.500 IN. WIDE,0.620 IN. DEEP,FIRST 3.500 FROM END,SECOND 6.750 IN. FROM END,STEP CUT 15.880 IN. FROM END,0.620 IN. DEEP TO END SECOND LEG HAS 3 HOLES 0.218 IN. WIDE,0.750 IN. LONG,FIRST HOLE CENTERED 0.500 IN. LG,. FIRST HOLE CENTERED 0.500 IN. ALONG WIDTH 1.750 ALONG LG. SECOND HOLE CENTERED AT 15.000 IN. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12311977-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12288379-1 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2520-01-123-6783 is a Seal,exhaust Duct, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-123-6783 has 1 manufacturer part number on file: 12311977-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12311977-1: General Characteristics Item Description: STAINLESS STEEL 0.025 IN. LG.,FIRST LEG 1.000 IN. WIDE TWO NOTCHES 1.500 IN. WIDE,0.620 IN. DEEP,FIRST 3.500 FROM END,SECOND 6.750 IN. FROM END,STEP CUT 15.880 IN. FROM END,0.620 IN. DEEP TO END SECOND LEG HAS 3 HOLES 0.218 IN. WIDE,0.750 IN. LONG,FIRST HOLE CENTERED 0.500 IN. LG,. FIRST HOLE CENTERED 0.500 IN. ALONG WIDTH 1.750 ALONG LG. SECOND HOLE CENTERED AT 15.000 IN. IN; End Item Identification: 19207; MACHINERY PARTS. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.