The Tee,pipe, cataloged under National Stock Number 4730-01-375-0317, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-375-0317 |
| Primary Part Number | 5121-100 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 3 PREINSERTED RING |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET BRAZING RING (PIPE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Material Document and Classification | ASTM B-61 OR B-62 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.000 INCHES NOMINAL ALL ENDS IN |
| Maximum Operating Temp | 425.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 5210309 PART 98 | Naval Sea Systems Command (USA) |
| 5121-100 PRIMARY | Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5121-100 | 5/9 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
| 5210309 | D/9 Drawing number reference only Naval Sea Systems Command |
| 00699067530614 | 5/1 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
NSN 4730-01-375-0317 is a Tee,pipe, manufactured by Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-375-0317 has 2 manufacturer part numbers on file: 5210309 PART 98 (Naval Sea Systems Command), 5121-100 (Lbc Aquisitions Llc Dba Lee Brass Div Lee Brass Foundry, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-375-0318, 4730-01-375-0321. Verify interchangeability with system specifications before substitution.
Key specifications for 5121-100: Furnished Items and Quantity: 3 PREINSERTED RING; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: SOCKET BRAZING RING (PIPE) ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 9 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.