The Valve,ball, cataloged under National Stock Number 4820-01-187-4928, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-187-4928 |
| Primary Part Number | SS-42X6MM |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | CROSS |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 17200.0 KILOPASCALS (KPA) MAXIMUM FIRST RESPONSE |
| Operating Pressure | 17200.0 KILOPASCALS (KPA) MAXIMUM SECOND RESPONSE |
| Operating Pressure | 17200.0 KILOPASCALS (KPA) MAXIMUM THIRD RESPONSE |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Bonnet Attachment Method | INTEGRAL |
| Media for Which Designed | WATER-OIL-GAS THIRD RESPONSE |
| Media for Which Designed | GAS, INERT SECOND RESPONSE |
| Media for Which Designed | ACID, NITRIC FIRST RESPONSE |
| Material | STEEL COMP 316 BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Material | STEEL COMP 316 SEAT |
| Material | STEEL COMP 316 STEM |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Thread Series Designator | ISO S ALL ENDS |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-187-4928 is a Valve,ball, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-187-4928 has 2 manufacturer part numbers on file: SS-42X6MM (Swagelok Co), SS-42S6MM (Swagelok Co).
Key specifications for SS-42X6MM: Connection Style: FLARELESS (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Style Designator: CROSS; Material Document and Classification: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE STEM. 24 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.