The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-990-8908, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-990-8908 |
| Primary Part Number | NAS594-6 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use |
| Status | CANCELLED |
| Material Document and Classification | MIL-S-18732, COND HT-200 MIL SPEC SINGLE MATERIAL RESPONSE |
| Seat Angle in Deg | 33.0 |
| Material Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 431 |
| Casehardening Indicator | NOT CASEHARDENED |
| Smallest Inside Diameter | 0.380 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNF |
| Thread Size | 0.562-18 |
| Thread Direction | RIGHT-HAND |
| Fabrication Method | BAR STOCK, MACHINED |
| Thread Class | 3A A |
| Tube Outside Diameter for Which Designed | 0.375 INCHES NOMINAL IN |
| Width Across Flats | 0.465 INCHES NOMINAL IN |
| Strength Rating | ERR-060 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4730-00-990-8908 is a Inverted Nut,tube Coupling, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-990-8908 has 3 cross-referenced part numbers: 4184-6 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), NAS594-6 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS594-6 (Aerofit, Llc).
There are 2 known substitutes for 4730-00-990-8908: 3040-00-512-3372, 2530-00-528-2872. Verify interchangeability with system specifications before substitution.
Key specifications for NAS594-6: Material Document and Classification: MIL-S-18732, COND HT-200 MIL SPEC SINGLE MATERIAL RESPONSE; Seat Angle in Deg: 33.0; Material Hardness Rating: 20.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Style Designator: INVERTED NUT, TUBE, FLARE. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-990-8908 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.