The Adapter,spline, cataloged under National Stock Number 4920-01-225-3071, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Avtron Aerospace Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-225-3071 |
| Primary Part Number | D16495 |
| Item Name | Adapter,spline |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Avtron Aerospace Inc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL PER AISI 8620;O/A DIM. 1.750 IN. LG BY 1.750 IN. W;BLACK OXIDE PER MIL-C-13924,CLASS 1;CASE HARDEN TO RC 58-62,.010 IN. MIN.DEPTH;MACHINE FINISH ALL SURFACES 63;EXTERNAL SPLINE 26 TEETH,16/32 DIAMETRAL PITCH,30 DEG PRESSURE ANGLE,1.625 IN. PITCH DIA,MAJOR DIA 1.688 IN.,MINOR DIA 1.500 IN.,BASE CIRCLE DIA 1.407 IN.,CIRCULAR PITCH 0.196 IN.,MEASURE OVER PINS 1.795 IN. MIN,PIN DIA 0.120 IN.,FILLET ROOT SIDEFIT TYPE;INTERNAL SPLINE 12 TEETH,16/32 DIAMETRAL PITCH,30 DEG PRESSURE ANGLE,0.750 IN. PITCH DIA,MAJOR DIA 0.838 IN.,MINOR DIA 0.692 IN.,BASE CIRCLE DIA 0.650 IN.,CIRCULAR PITCH 0.196 IN.,MEASURE BETWEEN PINS 0.594 IN.,PIN DIA 0.108 IN.,CIRCULAR SPACE WIDTH 0.982 IN.,FILLET RADIUS 0.020 IN.,FLAT ROOT SIDE FIT TYPE IN |
| 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 |
|---|---|
| D16495 PRIMARY | Avtron Aerospace Inc (USA) |
NSN 4920-01-225-3071 is a Adapter,spline, manufactured by Avtron Aerospace Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-225-3071 has 1 manufacturer part number on file: D16495 (Avtron Aerospace Inc).
Key specifications for D16495: General Characteristics Item Description: STEEL PER AISI 8620;O/A DIM. 1.750 IN. LG BY 1.750 IN. W;BLACK OXIDE PER MIL-C-13924,CLASS 1;CASE HARDEN TO RC 58-62,.010 IN. MIN.DEPTH;MACHINE FINISH ALL SURFACES 63;EXTERNAL SPLINE 26 TEETH,16/32 DIAMETRAL PITCH,30 DEG PRESSURE ANGLE,1.625 IN. PITCH DIA,MAJOR DIA 1.688 IN.,MINOR DIA 1.500 IN.,BASE CIRCLE DIA 1.407 IN.,CIRCULAR PITCH 0.196 IN.,MEASURE OVER PINS 1.795 IN. MIN,PIN DIA 0.120 IN.,FILLET ROOT SIDEFIT TYPE;INTERNAL SPLINE 12 TEETH,16/32 DIAMETRAL PITCH,30 DEG PRESSURE ANGLE,0.750 IN. PITCH DIA,MAJOR DIA 0.838 IN.,MINOR DIA 0.692 IN.,BASE CIRCLE DIA 0.650 IN.,CIRCULAR PITCH 0.196 IN.,MEASURE BETWEEN PINS 0.594 IN.,PIN DIA 0.108 IN.,CIRCULAR SPACE WIDTH 0.982 IN.,FILLET RADIUS 0.020 IN.,FLAT ROOT SIDE FIT TYPE IN; End Item Identification: 4920011249131,ADAPTER SET. 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.