The Body,shroud, cataloged under National Stock Number 4820-01-127-7797, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-127-7797 |
| Item Name | Body,shroud |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER-NICKEL,MIL-C-20159,TYPE 1; 21.000 IN. W BASE,21.500 IN. DIA BODY,10.630 IN. O/A DEEP FROM FRONT TO BACK BODY,9.500 IN. O/A DEEP FROM FRONT TO BACK BASE; WITH TWELVE THD HOLES EQUALLY SPACED ON A 20.000 IN. DIA BOLT CIRCLE,1.380 IN. DEEP,90 DEG COUNTERSUNK TO 0.800 IN. DIA,3/4 IN. 10 UNC-2B THD SIZE,0.900 IN. THD DEPTH; WITH TWELVE UNTHD HOLES EQUALLY SPACED ON A 15.250 IN. DIA BOLT CIRCLE,0.636 IN. DIA THRU; WITH THREE THD HOLES EQUALLY SPACED ON A 15.250 IN. DIA BOLT CIRCLE,90 DEG COUNTERSUNK TO 0.660 IN. DIA,5/8 IN. 11 UNC-2B THD SIZE FOR JACKING PURPOSES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 704-4674166 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
| 87553-5008 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
| 704-4674166 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-127-7797 is a Body,shroud, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-129-1702, 4730-01-129-1753. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-127-7797: General Characteristics Item Description: COPPER-NICKEL,MIL-C-20159,TYPE 1; 21.000 IN. W BASE,21.500 IN. DIA BODY,10.630 IN. O/A DEEP FROM FRONT TO BACK BODY,9.500 IN. O/A DEEP FROM FRONT TO BACK BASE; WITH TWELVE THD HOLES EQUALLY SPACED ON A 20.000 IN. DIA BOLT CIRCLE,1.380 IN. DEEP,90 DEG COUNTERSUNK TO 0.800 IN. DIA,3/4 IN. 10 UNC-2B THD SIZE,0.900 IN. THD DEPTH; WITH TWELVE UNTHD HOLES EQUALLY SPACED ON A 15.250 IN. DIA BOLT CIRCLE,0.636 IN. DIA THRU; WITH THREE THD HOLES EQUALLY SPACED ON A 15.250 IN. DIA BOLT CIRCLE,90 DEG COUNTERSUNK TO 0.660 IN. DIA,5/8 IN. 11 UNC-2B THD SIZE FOR JACKING PURPOSES 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.
NSN 4820-01-127-7797 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.