The Retainer,block, cataloged under National Stock Number 5342-01-278-7211, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5342-01-278-7211 |
| Primary Part Number | 2121249 |
| Item Name | Retainer,block |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | MK13MOD4 REPR |
| General Characteristics Item Description | OVERALL DIMENSIONS: LENGTH 8.489 INCHES MIN TO 8.515 INCHES MAX; WIDTH 4.547 INCHES MIN TO 4.577 INCHES MAX; HEIGHT 3.766 INCHES MIN TO 3.796 INCHES MAX; MATERIAL: STEEL FORG 4140 SUB: OD 8853; TYPE D GRADE 3; CLASS A; QUENCH AND TEMP 240-280 BHN; ALTERNATIVE: QQ-S-624 OR MIL-F-7190; MAGNETIC PARTICAL INSPECTED IN ACCORDANCE WITH MIL-I-6868; SURFACE TREATMENTS: MANGANESE PHOSPHATE DOD-P-16232 TYPE M; CLASS 1 OR LIGHT ZINC PHOSPHATE PER TT-C-490 TYPE 1; 1 COAT ZINC CHROMATE PRIMER TT-P-1757 COLOR Y; CMPSN OPTIONAL; PAINT LIGHT GRAY PER MIL-STD-1303 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2121249 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1440PL0924825 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5342-01-278-7211 is a Retainer,block, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-01-278-7211 has 1 manufacturer part number on file: 2121249 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2121249: FSC Application Data: MK13MOD4 REPR; General Characteristics Item Description: OVERALL DIMENSIONS: LENGTH 8.489 INCHES MIN TO 8.515 INCHES MAX; WIDTH 4.547 INCHES MIN TO 4.577 INCHES MAX; HEIGHT 3.766 INCHES MIN TO 3.796 INCHES MAX; MATERIAL: STEEL FORG 4140 SUB: OD 8853; TYPE D GRADE 3; CLASS A; QUENCH AND TEMP 240-280 BHN; ALTERNATIVE: QQ-S-624 OR MIL-F-7190; MAGNETIC PARTICAL INSPECTED IN ACCORDANCE WITH MIL-I-6868; SURFACE TREATMENTS: MANGANESE PHOSPHATE DOD-P-16232 TYPE M; CLASS 1 OR LIGHT ZINC PHOSPHATE PER TT-C-490 TYPE 1; 1 COAT ZINC CHROMATE PRIMER TT-P-1757 COLOR Y; CMPSN OPTIONAL; PAINT LIGHT GRAY PER MIL-STD-1303 IN; End Item Identification: 1440-00-159-0747 RAIL MAGAZINE. 2 specifications are 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.
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.