The Retainer Assembly,optical, cataloged under National Stock Number 1270-01-052-9978, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1270-01-052-9978 |
| Item Name | Retainer Assembly,optical |
| FSC / FSG | 1270 / 12 — Aircraft Gunnery Fire Control Components |
| Status | ACTIVE |
| General Characteristics Item Description | ITEM CONSIST OF CORROSION RESISTANT STEEL 0.505 IN. IN DIA.,0.17 IN. THICK WITH HOLE IN CENTER TAPPED 10-56UNS-2B AND A PRESS FITTING FACILITY AT END OF HOLE,ONE HOLE FOR PRESS FIT WITH 0.625 PLUS OR MINUS .00025 DIA. STRAIGHT PIN LOCATED 0.180IN. FROM TAPPED HOLE CENTER,ONE NOTCH 0.065 IN. WIDE RUNNING FROM THE OUTSIDE CIRCUMFERENCE TO THE POINT 0.14 IN. FROM THE TAPPED HOLE CENTER AND EXTENDS FROM ONE PARALLEL BEARING SURFACE TO THE OTHER AND ISLOCATED ON 180 DEGREE AXIS WITH HOLES ALREADY MENTIONED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 164B8617G2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1270-01-052-9978 is a Retainer Assembly,optical, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
Key specifications for 1270-01-052-9978: General Characteristics Item Description: ITEM CONSIST OF CORROSION RESISTANT STEEL 0.505 IN. IN DIA.,0.17 IN. THICK WITH HOLE IN CENTER TAPPED 10-56UNS-2B AND A PRESS FITTING FACILITY AT END OF HOLE,ONE HOLE FOR PRESS FIT WITH 0.625 PLUS OR MINUS .00025 DIA. STRAIGHT PIN LOCATED 0.180IN. FROM TAPPED HOLE CENTER,ONE NOTCH 0.065 IN. WIDE RUNNING FROM THE OUTSIDE CIRCUMFERENCE TO THE POINT 0.14 IN. FROM THE TAPPED HOLE CENTER AND EXTENDS FROM ONE PARALLEL BEARING SURFACE TO THE OTHER AND ISLOCATED ON 180 DEGREE AXIS WITH HOLES ALREADY MENTIONED IN; End Item Identification: OPTICAL SIGHT SYSTEM,LEAD COMPUTER-AN/ASG-30. 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.