PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5591Spacer,ring

Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division · NSN 5365-01-107-0045 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-107-0045 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-107-0045. Primary manufacturer part number: 5591.
Features
  • Spacer,ring — FSC 5365
  • 2 verified cross-references
  • Primary manufacturer: Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Spacer,ring, cataloged under National Stock Number 5365-01-107-0045, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSpacer,ring
FSC / FSG5365 — No Item Name Available (FSG 53)
ManufacturersRomac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (CAGE 90800)
Technical Specifications
ParameterValue
NSN5365-01-107-0045
Primary Part Number5591
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerRomac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5960-00-237-0094 INTERCHANGEABLE
Electron Tube
6550-01-146-80425591 INTERCHANGEABLE
Control,glucose
Bayer Corp Diagnostics Div
5985-01-448-90542027-10DB INTERCHANGEABLE
Attenuator,fixed
Spectrum Control, Inc.
Cross-Reference Index
Part NumberManufacturer
5591 PRIMARY Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (USA)
1682-B3 PIECE 7 Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (USA)
Related Parts
5960-00-237-0094INTERCHANGEABLE
ELECTRON TUBE
6550-01-146-8042INTERCHANGEABLE
CONTROL,GLUCOSE
5591
5985-01-448-9054INTERCHANGEABLE
ATTENUATOR,FIXED
2027-10DB

Frequently Asked Questions

What is NSN 5365-01-107-0045?

NSN 5365-01-107-0045 is a Spacer,ring, manufactured by Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-107-0045?

NSN 5365-01-107-0045 has 2 cross-referenced part numbers: 5591 (Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division), 1682-B3 PIECE 7 (Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division).

What NSN replaces 5365-01-107-0045?

There are 3 known substitutes for 5365-01-107-0045: 5960-00-237-0094, 6550-01-146-8042, 5985-01-448-9054. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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