The Valve Needle, cataloged under National Stock Number 4820-01-668-7740, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-668-7740 |
| Primary Part Number | B-1RM4-F4 OXYGEN CLEAN |
| Item Name | Valve Needle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| B-1RM4-F4 OXYGEN CLEAN | Swagelok Co (USA) |
| 074-1600 ITEM 40CP | Naval Inventory Control Point Mechanicsburg (USA) |
| XMB-1RM4-F4 OXYGEN CLEAN | Rix Industries (USA) |
| B-1RM4-F4 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| XMB-1RM4-F4 OXYGEN CLEANCP | 3/1 Design control — primary reference Naval Inventory Control Point Mechanicsburg |
| 074-1600 ITEM 40 | 5/1 Secondary reference Rix Industries |
NSN 4820-01-668-7740 is a Valve Needle, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-668-7740 has 4 manufacturer part numbers on file: B-1RM4-F4 OXYGEN CLEAN (Swagelok Co), 074-1600 ITEM 40CP (Naval Inventory Control Point Mechanicsburg), XMB-1RM4-F4 OXYGEN CLEAN (Rix Industries), B-1RM4-F4 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg).
Key specifications for B-1RM4-F4 OXYGEN CLEAN: Criticality Code Justification: ZZZY; Part Name Assigned by Controlling Agency: NEEDLE VALVE 1/4 MNPT X 1/4 FNPT; End Item Identification: CALIBRATION KIT O2 PRODUCTION PLANT; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 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.