The Steam Chest Assembly, cataloged under National Stock Number 4320-01-084-3642, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-084-3642 |
| Primary Part Number | TB-28 |
| Item Name | Steam Chest Assembly |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF P/N SX-5 MAIN CHEST LINER 1 EA,P/N SY-5 AUX CHEST LINER 1 EA,1/8 IN. PIPE PLUG 6 EA,1/2 BY 2 IN. STUD 8 EA,1/2 IN. HEX NUT 12 EA,P/N UG-2 GLAND STUD 4 EA,3/8 IN. HEX NUT 6 EA,SPLIT PIN 3/32 IN. BY 3/4 IN. LG 4 EA,P/N UL-1 CHEST BUSH LKG PLUG 2 EA,P/N TQ-4 GASKET 2 EA,P/N TQ-3 GASKET 2 EA,AUX CHEST HEAD 2 EA,P/N SP-1 THROAT LINER 2 EA,P/N TL-2 GLAND 2 EA,SHOULDER STUD 2 EA,3/8 IN. JAM NUT 4 EA,3/8 IN. SHAKEPROOF WASHER 4 EA,MAIN CHEST HEAD 2 EA,1/8 BY 1/4 IN. KEEPER 3 EA,P/N YB-1 MAIN PISTON VALVE ASSEMBLY,1 EA,1.000 IN. PIPE PLUG 2 EA,P/N TN-2 MAIN PISTON VALVE RING 8 EA,P/N YC-1 AUX PISTON VALVE ASSEMBLY 1 EA,P/N SC-10 TAIL ROD 1 EA,AUX VALVE ROD 1 EA,1/2 IN. JAM NUT 2 EA,KNUCKLE JOINT 1 EA,P/N SR-3 KNUCKLE JOINT BUSHING 1 EA,KNUCKLE TAPER PIN 1 EA,P/N WK-29 FLANGED NIPPLE CHEST DRAIN 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 |
|---|---|
| TB-28 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| BS5-2349-A4PC61 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| BS5-2349-A4 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-084-3642 is a Steam Chest Assembly, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-084-3642 has 1 manufacturer part number on file: TB-28 (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for TB-28: General Characteristics Item Description: CONSISTS OF P/N SX-5 MAIN CHEST LINER 1 EA,P/N SY-5 AUX CHEST LINER 1 EA,1/8 IN. PIPE PLUG 6 EA,1/2 BY 2 IN. STUD 8 EA,1/2 IN. HEX NUT 12 EA,P/N UG-2 GLAND STUD 4 EA,3/8 IN. HEX NUT 6 EA,SPLIT PIN 3/32 IN. BY 3/4 IN. LG 4 EA,P/N UL-1 CHEST BUSH LKG PLUG 2 EA,P/N TQ-4 GASKET 2 EA,P/N TQ-3 GASKET 2 EA,AUX CHEST HEAD 2 EA,P/N SP-1 THROAT LINER 2 EA,P/N TL-2 GLAND 2 EA,SHOULDER STUD 2 EA,3/8 IN. JAM NUT 4 EA,3/8 IN. SHAKEPROOF WASHER 4 EA,MAIN CHEST HEAD 2 EA,1/8 BY 1/4 IN. KEEPER 3 EA,P/N YB-1 MAIN PISTON VALVE ASSEMBLY,1 EA,1.000 IN. PIPE PLUG 2 EA,P/N TN-2 MAIN PISTON VALVE RING 8 EA,P/N YC-1 AUX PISTON VALVE ASSEMBLY 1 EA,P/N SC-10 TAIL ROD 1 EA,AUX VALVE ROD 1 EA,1/2 IN. JAM NUT 2 EA,KNUCKLE JOINT 1 EA,P/N SR-3 KNUCKLE JOINT BUSHING 1 EA,KNUCKLE TAPER PIN 1 EA,P/N WK-29 FLANGED NIPPLE CHEST DRAIN 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.
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.