PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H87-6Washer,lock

Niagara Electrical Instrument Co · NSN 5310-00-011-0730 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-011-0730 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-011-0730. Primary manufacturer part number: H87-6.
Features
  • Washer,lock — FSC 5310
  • Nondefinitive Spec/std Data: 1 STYLE AND A CLASS
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL OVERALL
  • Material Thickness: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-011-0730, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Niagara Electrical Instrument Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 15 manufacturers, 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
NSN5310-00-011-0730
Primary Part NumberH87-6
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNiagara Electrical Instrument Co
StatusACTIVE
Nondefinitive Spec/std Data1 STYLE AND A CLASS
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Document and ClassificationFED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL OVERALL
Material Thickness0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Hole Diameter0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
Outside Diameter0.678 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1560-00-074-217520131 INTERCHANGEABLE
Control Assembly
Triumph Controls, Llc Dba Triumph Controls, Llc
5340-00-215-5088A7451X12 INTERCHANGEABLE
Clamp,loop
Agco Corp Parts Opn
5950-00-224-2011 INTERCHANGEABLE
Coil,electrical
5133-00-228-1324 INTERCHANGEABLE
Drill,twist
4810-00-413-316420131 INTERCHANGEABLE
Seat,valve
Pneudraulics, Inc.
5310-00-637-9541019-00004-42 INTERCHANGEABLE
Washer,lock
Kovatch Corp.
1650-00-698-549720131 INTERCHANGEABLE
Screw,adjusting,pum
Hydro-Aire Aerospace Corp
5110-00-765-41445110-00-765-4144 INTERCHANGEABLE
Blade,knife
General Services Administration Federal Supply Service
5930-00-924-4750101900 INTERCHANGEABLE
Switch
Roanwell, Llc
5340-01-056-0843H876 INTERCHANGEABLE
Catch,clamping
Hartwell Corporation
Cross-Reference Index
Part NumberManufacturer
H87-6 Niagara Electrical Instrument Co
7435-64H Oneida Ltd Silversmiths (USA)
85392 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
0910328 Agco Corp Parts Opn (USA)
N405P13C11 General Electric Company (USA)
20131 Liggett Spring and Axle Co (USA)
3064690 Energy Services Group Div of Cooper Industries Inc (USA)
110730 Navistar International Corporation Dba Navistar (USA)
910328 Allis-Chalmers Corp (USA)
X16 Diamond Reo Truck Co (USA)
WA6-12 Ambac International Corporation Div Ambac International (USA)
WA406079 Ambac International Corporation Div Ambac International (USA)
110730 Us Army Aviation and Missile Command (USA)
DX254 Diamond Reo Truck Co (USA)
MS35337-8 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
N7460AN Diamond Reo Truck Co (USA)
110730 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
FFW84CLASSASTYLE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
1560-00-074-2175INTERCHANGEABLE
CONTROL ASSEMBLY
20131
5340-00-215-5088INTERCHANGEABLE
CLAMP,LOOP
A7451X12
5950-00-224-2011INTERCHANGEABLE
COIL,ELECTRICAL
5133-00-228-1324INTERCHANGEABLE
DRILL,TWIST
4810-00-413-3164INTERCHANGEABLE
SEAT,VALVE
20131
5310-00-637-9541INTERCHANGEABLE
WASHER,LOCK
019-00004-42
1650-00-698-5497INTERCHANGEABLE
SCREW,ADJUSTING,PUM
20131
5110-00-765-4144INTERCHANGEABLE
BLADE,KNIFE
5110-00-765-4144
5930-00-924-4750INTERCHANGEABLE
SWITCH
101900
5340-01-056-0843INTERCHANGEABLE
CATCH,CLAMPING
H876
5133-01-116-6045INTERCHANGEABLE
DRILL,TWIST
5895-01-126-6153INTERCHANGEABLE
MODEM,COMMUNICATIONS
362074-011

Frequently Asked Questions

What is NSN 5310-00-011-0730?

NSN 5310-00-011-0730 is a Washer,lock, manufactured by Niagara Electrical Instrument Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-011-0730?

NSN 5310-00-011-0730 has 18 cross-referenced part numbers: H87-6 (Niagara Electrical Instrument Co), 7435-64H (Oneida Ltd Silversmiths), 85392 (Brockway Motor Trucks Div of Mack Trucks Inc), 0910328 (Agco Corp Parts Opn), N405P13C11 (General Electric Company) and 13 more.

What NSN replaces 5310-00-011-0730?

There are 12 known substitutes for 5310-00-011-0730: 1560-00-074-2175, 5340-00-215-5088, 5950-00-224-2011 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H87-6?

Key specifications for H87-6: Nondefinitive Spec/std Data: 1 STYLE AND A CLASS; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD ALL MATERIAL RESPONSES OVERALL; Material: STEEL OVERALL. 8 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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