PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11991Hook,support

Hindley Manufacturing Company Inc · NSN 5340-01-256-9223 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-256-9223 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-256-9223. Primary manufacturer part number: 11991.
Features
  • Hook,support — FSC 5340
  • Surface Treatment: ZINC AND CHROMATE
  • Material Diameter: 0.250 INCHES NOMINAL IN
  • Mounting Hole Quantity: 2
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Hindley Manufacturing Company Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Hook,support, cataloged under National Stock Number 5340-01-256-9223, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hindley Manufacturing Company Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-256-9223
Primary Part Number11991
Item NameHook,support
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHindley Manufacturing Company Inc
StatusACTIVE
Surface TreatmentZINC AND CHROMATE
Material Diameter0.250 INCHES NOMINAL IN
Mounting Hole Quantity2
Mounting Hole Diameter0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5940-00-058-963912121 INTERCHANGEABLE
Terminal Board
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5945-00-259-0540119-9-1 INTERCHANGEABLE
Relay,electromagnetic
Kearfott Corporation Div Guidance and Navigation Division
3455-00-516-4043 INTERCHANGEABLE
Reamer,machine
5910-00-655-0210235-1334 P7 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Raytheon Company Dba Raytheon Co
5910-00-666-02931038P9 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Howmet Global Fastening Systems Inc Div Torrance Operations
5950-00-706-9431 INTERCHANGEABLE
Transformer,radio Frequency
5360-00-757-449011991 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5930-00-789-483611-0099-00 INTERCHANGEABLE
Switch,thermostatic
Scotsman Industries Inc Div Scotsman Ice Systems
3820-01-171-451011991 INTERCHANGEABLE
Cap,lever,reel
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
6145-01-185-029411991 INTERCHANGEABLE
Cable,power,electrical
The First Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
53C Hindley Manufacturing Company Inc (USA)
11991 PRIMARY Hindley Manufacturing Company Inc (USA)
037459119915 Hindley Manufacturing Company Inc (USA)
Related Parts
5940-00-058-9639INTERCHANGEABLE
TERMINAL BOARD
12121
5945-00-259-0540INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
119-9-1
3455-00-516-4043INTERCHANGEABLE
REAMER,MACHINE
5910-00-655-0210INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
235-1334 P7
5910-00-666-0293INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
1038P9
5950-00-706-9431INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5360-00-757-4490INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11991
5930-00-789-4836INTERCHANGEABLE
SWITCH,THERMOSTATIC
11-0099-00
3820-01-171-4510INTERCHANGEABLE
CAP,LEVER,REEL
11991
6145-01-185-0294INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
11991
5905-01-250-1185INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
737132-01
5998-01-381-7984INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
11991

Frequently Asked Questions

What is NSN 5340-01-256-9223?

NSN 5340-01-256-9223 is a Hook,support, manufactured by Hindley Manufacturing Company Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-256-9223?

NSN 5340-01-256-9223 has 3 cross-referenced part numbers: 53C (Hindley Manufacturing Company Inc), 11991 (Hindley Manufacturing Company Inc), 037459119915 (Hindley Manufacturing Company Inc).

What NSN replaces 5340-01-256-9223?

There are 12 known substitutes for 5340-01-256-9223: 5940-00-058-9639, 5945-00-259-0540, 3455-00-516-4043 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11991?

Key specifications for 11991: Surface Treatment: ZINC AND CHROMATE; Material Diameter: 0.250 INCHES NOMINAL IN; Mounting Hole Quantity: 2; Mounting Hole Diameter: 0.188 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

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