The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-450-1764, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-450-1764 |
| Primary Part Number | 6991-1D1 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — No Item Name Available |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| End Connection Design | STRAIGHT FIRST END |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Operating Pressure | 135.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Quantity Per Inch | 12 FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Inside Surface Condition | SMOOTH |
| Connection Style | SWIVEL NUT, GASKET SEAL FIRST END |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Thread Series Designator | UN FIRST END |
| Measuring Method and Length | 52.250 INCHES NOMINAL OVERALL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Thread Size | 1.438 INCHES FIRST END IN |
| Layer Composition and Location | 1ST LAYER BRAIDED SYNTHETIC CORD AND OUTER LAYER BRAIDED POLYAMIDE CORD |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P9290 SYSTEM CERTIFICATION PROCEDURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1622 OR MIL-STD-1330 AS DEEMED APPLICABLE; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICALS AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Thread Class | 3B FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Minimum Inside Bending Radius | 3.000 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6991-1D1 | Naval Inventory Control Point Mechanicsburg (USA) |
| SK7005574D1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6991D1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6991 | Transdigm Inc Div Adelwiggins Group (USA) |
| 7005574-1D1 | Naval Inventory Control Point Mechanicsburg (USA) |
| SK7005574 | Naval Sea Systems Command (USA) |
| 6991-1 | Transdigm Inc Div Adelwiggins Group (USA) |
| 7005574-1 | Naval Sea Systems Command (USA) |
NSN 4720-01-450-1764 is a Hose Assembly,nonmetallic, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4720 (No Item Name Available). Status: active.
NSN 4720-01-450-1764 has 8 cross-referenced part numbers: 6991-1D1 (Naval Inventory Control Point Mechanicsburg), SK7005574D1 (Naval Inventory Control Point Mechanicsburg), 6991D1 (Naval Inventory Control Point Mechanicsburg), 6991 (Transdigm Inc Div Adelwiggins Group), 7005574-1D1 (Naval Inventory Control Point Mechanicsburg) and 3 more.
There are 8 known substitutes for 4720-01-450-1764: 2920-00-356-0818, 4920-00-403-0130, 6625-00-893-7165 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6991-1D1: End Connection Design: STRAIGHT FIRST END; Inside Diameter: 1.000 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Connection Type: THREADED INTERNAL TUBE FIRST END. 20 total characteristics are documented in the Federal Logistics Information System.