The Coil,radio Frequency, cataloged under National Stock Number 5950-00-991-3399, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Shiloh Industries Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-991-3399 |
| Primary Part Number | 3688-AY1-B |
| Item Name | Coil,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Shiloh Industries Inc |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | THREADED BUSHING SINGLE GROUP |
| Adjustment Device Drive Type | SLOTTED SCREW SINGLE COMPONENT |
| Body Width | 0.936 INCHES NOMINAL IN |
| Body Height | 0.406 INCHES NOMINAL IN |
| Adjustment Method and Quantity | 1 ADJUSTABLE CAPACITOR SINGLE COMPONENT |
| Coil Form Type | HOLLOW SINGLE COMPONENT |
| Nominal Thread Size | 0.250 INCHES SINGLE GROUP IN |
| Body Length | 1.500 INCHES NOMINAL IN |
| DC Resistance Rating in Ohms | 0.521 SINGLE COMPONENT SINGLE WINDING |
| Reliability Indicator | NOT ESTABLISHED |
| Core Construction | POWDERED SINGLE COMPONENT |
| Thread Quantity Per Inch | 28 SINGLE GROUP |
| Terminal Type and Quantity | 2 WIRE LEAD |
| Thread Series Designator | UNF SINGLE GROUP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3688-AY1-B | Shiloh Industries Inc (USA) |
| 553-1700-004 | J F C Electronics Inc (USA) |
| 801-1 | American Trans-Coil Corp (USA) |
| Reference | Meaning |
|---|---|
| 553-1700-004DTD17DEC | C/1 Advisory reference — outside the item-of-supply concept Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 553-1700-004 | 3/2 Design control — primary reference U.S. Government activity |
| 553-1700-004 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5950-00-991-3399 is a Coil,radio Frequency, manufactured by Shiloh Industries Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-991-3399 has 3 manufacturer part numbers on file: 3688-AY1-B (Shiloh Industries Inc), 553-1700-004 (J F C Electronics Inc), 801-1 (American Trans-Coil Corp).
Key specifications for 3688-AY1-B: Inclosure Type: FULLY INCLOSED; Mounting Method: THREADED BUSHING SINGLE GROUP; Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT; Body Width: 0.936 INCHES NOMINAL IN. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.