PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1770-27Ring,wearing

Weil Pump Co Inc · NSN 4320-00-774-5959 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-774-5959 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-774-5959. Primary manufacturer part number: A1770-27.
Features
  • Ring,wearing — FSC 4320
  • Corner Shape: SQUARE ALL CORNERS
  • Surface Finish: 14.0 MICROINCHES ALL SURFACES
  • Body Style: PLAIN
  • Body Outside Diameter: 2.377 INCHES MINIMUM AND 2.378 INCHES MAXIMUM IN
  • Material: COPPER ALLOY
  • Body Inside Diameter: 1.955 INCHES MINIMUM AND 1.960 INCHES MAXIMUM IN
  • 2 verified cross-references
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-774-5959, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Weil Pump Co Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-774-5959
Primary Part NumberA1770-27
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWeil Pump Co Inc
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
Surface Finish14.0 MICROINCHES ALL SURFACES
Body StylePLAIN
Body Outside Diameter2.377 INCHES MINIMUM AND 2.378 INCHES MAXIMUM IN
MaterialCOPPER ALLOY
Body Inside Diameter1.955 INCHES MINIMUM AND 1.960 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4240-00-022-252110191755 INTERCHANGEABLE
Lanyard,safety,industrial
Mine Safety Appliances Company
4730-00-187-7576 INTERCHANGEABLE
Coupling,pipe
3030-00-239-49592333 INTERCHANGEABLE
Belt,v
Gates Corporation
5340-00-455-69132333 INTERCHANGEABLE
Standoff,threaded,spacing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5950-00-578-1098 INTERCHANGEABLE
Transformer,power Autotransforme
6625-00-630-63122333 INTERCHANGEABLE
Washer Assy,shield
Entron Industries Limited Partnership Dba Entron Industries Property Div
5950-00-645-89722333 INTERCHANGEABLE
Transformer,power
Precision Electronics, Inc
5360-00-679-20002333 INTERCHANGEABLE
Spring,helical,extension
B/e Aerospace Inc Dba Interturbine
5315-00-764-44952333 INTERCHANGEABLE
Pin,drive,power Actuated
Illinois Tool Works Inc
1560-01-170-1194 INTERCHANGEABLE
Fitting,refuel,line
Cross-Reference Index
Part NumberManufacturer
A1770-27 PRIMARY Weil Pump Co Inc (USA)
2333 PRIMARY Weil Pump Co Inc (USA)
Related Parts
4240-00-022-2521INTERCHANGEABLE
LANYARD,SAFETY,INDUSTRIAL
10191755
4730-00-187-7576INTERCHANGEABLE
COUPLING,PIPE
3030-00-239-4959INTERCHANGEABLE
BELT,V
2333
5340-00-455-6913INTERCHANGEABLE
STANDOFF,THREADED,SPACING
2333
5950-00-578-1098INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
6625-00-630-6312INTERCHANGEABLE
WASHER ASSY,SHIELD
2333
5950-00-645-8972INTERCHANGEABLE
TRANSFORMER,POWER
2333
5360-00-679-2000INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
2333
5315-00-764-4495INTERCHANGEABLE
PIN,DRIVE,POWER ACTUATED
2333
1560-01-170-1194INTERCHANGEABLE
FITTING,REFUEL,LINE
5935-01-315-0926INTERCHANGEABLE
CONNECTOR BODY,PLUG,ELECTRICAL
2333
5310-01-332-3254INTERCHANGEABLE
WASHER,FLAT
17W12580

Frequently Asked Questions

What is NSN 4320-00-774-5959?

NSN 4320-00-774-5959 is a Ring,wearing, manufactured by Weil Pump Co Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-774-5959?

NSN 4320-00-774-5959 has 2 cross-referenced part numbers: A1770-27 (Weil Pump Co Inc), 2333 (Weil Pump Co Inc).

What NSN replaces 4320-00-774-5959?

There are 12 known substitutes for 4320-00-774-5959: 4240-00-022-2521, 4730-00-187-7576, 3030-00-239-4959 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1770-27?

Key specifications for A1770-27: Corner Shape: SQUARE ALL CORNERS; Surface Finish: 14.0 MICROINCHES ALL SURFACES; Body Style: PLAIN; Overall Length: 0.438 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

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