PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

48AGun,air Blow

Imperial · NSN 4940-00-181-7590 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-00-181-7590 — this item is cataloged by the U.S. Government under National Stock Number 4940-00-181-7590. Primary manufacturer part number: 48A.
Features
  • Gun,air Blow — FSC 4940
  • Thread Size: 1/4-18
  • Hang-Up Hook: NOT INCLUDED
  • Features Provided: THREADED INTERNAL COUPLING
  • Screw Thread Series Designator: NPT
  • 2 verified cross-references
  • Primary manufacturer: Imperial
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Gun,air Blow, cataloged under National Stock Number 4940-00-181-7590, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Imperial. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4940-00-181-7590
Primary Part Number48A
Item NameGun,air Blow
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerImperial
StatusCANCELLED
Thread Size1/4-18
Hang-Up HookNOT INCLUDED
Features ProvidedTHREADED INTERNAL COUPLING
Screw Thread Series DesignatorNPT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-005-73943835-27 INTERCHANGEABLE
Valve,safety Relief
Kahn and Company, Incorporated
4820-00-027-0994 INTERCHANGEABLE
Valve,safety Relief
4820-00-585-7859 INTERCHANGEABLE
Valve,safety Relief
3415-00-804-171748A INTERCHANGEABLE
Grinding Machine,carbide Tool Bi
Textron Inc
4820-00-812-900948A1-4IN205PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-00-836-2950 INTERCHANGEABLE
Valve,safety Relief
4820-00-837-8183 INTERCHANGEABLE
Valve,safety Relief
4820-00-837-8184115-4-50 INTERCHANGEABLE
Valve,safety Relief
Mid-State Sales, Inc. Div Defense Products Group
4820-00-840-428648A1-4IN220PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-00-844-684948A1-4IN75PSI INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Cross-Reference Index
Part NumberManufacturer
48A Imperial (USA)
5463K14 Mcmaster-Carr Supply Co (USA)
Related Parts
4820-00-005-7394INTERCHANGEABLE
VALVE,SAFETY RELIEF
3835-27
4820-00-027-0994INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-585-7859INTERCHANGEABLE
VALVE,SAFETY RELIEF
3415-00-804-1717INTERCHANGEABLE
GRINDING MACHINE,CARBIDE TOOL BI
48A
4820-00-812-9009INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN205PSI
4820-00-836-2950INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-837-8183INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-00-837-8184INTERCHANGEABLE
VALVE,SAFETY RELIEF
115-4-50
4820-00-840-4286INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN220PSI
4820-00-844-6849INTERCHANGEABLE
VALVE,SAFETY RELIEF
48A1-4IN75PSI
4140-00-936-3147INTERCHANGEABLE
BLOWER,AIR BARRIER
MODEL 48 STANDARD METAL HOUSING
4820-01-164-7771INTERCHANGEABLE
COCK,PLUG
4793K45

Frequently Asked Questions

What is NSN 4940-00-181-7590?

NSN 4940-00-181-7590 is a Gun,air Blow, manufactured by Imperial, classified under FSC 4940 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4940-00-181-7590?

NSN 4940-00-181-7590 has 2 cross-referenced part numbers: 48A (Imperial), 5463K14 (Mcmaster-Carr Supply Co).

What NSN replaces 4940-00-181-7590?

There are 12 known substitutes for 4940-00-181-7590: 4820-00-005-7394, 4820-00-027-0994, 4820-00-585-7859 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 48A?

Key specifications for 48A: Thread Size: 1/4-18; Hang-Up Hook: NOT INCLUDED; Features Provided: THREADED INTERNAL COUPLING; Screw Thread Series Designator: NPT. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4940-00-181-7590 still in active supply?

NSN 4940-00-181-7590 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com