PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H31-771Cap,pillow Block

Dresser Industries Inc Leroi Div · NSN 3130-00-358-0657 · FSC 3130 · No Item Name Available
Verified by PartsTable
NSN 3130-00-358-0657 — this item is cataloged by the U.S. Government under National Stock Number 3130-00-358-0657. Primary manufacturer part number: H31-771.
Features
  • Cap,pillow Block — FSC 3130
  • 5 verified cross-references
  • Primary manufacturer: Dresser Industries Inc Leroi Div
Applications
  • Industrial machinery bearing replacement
  • Motor and pump shaft assemblies
  • HVAC blower and fan assemblies
General Description

The Cap,pillow Block, cataloged under National Stock Number 3130-00-358-0657, is classified within Federal Supply Class 3130 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCap,pillow Block
FSC / FSG3130 — No Item Name Available (FSG 31)
ManufacturersDresser Industries Inc Leroi Div (CAGE 35301); Dresser Industries Inc Petroleum Equipment Div - Wayne (CAGE 06435)
Technical Specifications
ParameterValue
NSN3130-00-358-0657
Primary Part NumberH31-771
Item NameCap,pillow Block
FSC / FSG3130 / 31 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-069-1186SAE J246 6-4 120102BA INTERCHANGEABLE
Adapter,straight,pipe to Tube
Sae International Dba Sae International
5310-01-603-2276169631 INTERCHANGEABLE
Nut,plain,hexagon
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
1225 Dresser Industries Inc Leroi Div (USA)
1225 Dresser Industries Inc Petroleum Equipment Div - Wayne (USA)
H31-771 PRIMARY Dresser Industries Inc Leroi Div (USA)
AC2569 Dresser Industries Inc Leroi Div (USA)
AC2569 Dresser Industries Inc Petroleum Equipment Div - Wayne (USA)
Related Parts
4730-00-069-1186INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
SAE J246 6-4 120102BA
5310-01-603-2276INTERCHANGEABLE
NUT,PLAIN,HEXAGON
169631

Frequently Asked Questions

What is NSN 3130-00-358-0657?

NSN 3130-00-358-0657 is a Cap,pillow Block, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3130 (No Item Name Available). Status: active.

What are the part numbers for NSN 3130-00-358-0657?

NSN 3130-00-358-0657 has 5 cross-referenced part numbers: 1225 (Dresser Industries Inc Leroi Div), 1225 (Dresser Industries Inc Petroleum Equipment Div - Wayne), H31-771 (Dresser Industries Inc Leroi Div), AC2569 (Dresser Industries Inc Leroi Div), AC2569 (Dresser Industries Inc Petroleum Equipment Div - Wayne).

What NSN replaces 3130-00-358-0657?

There are 2 known substitutes for 3130-00-358-0657: 4730-00-069-1186, 5310-01-603-2276. Verify interchangeability with system specifications before substitution.

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