PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50118Front,spectacle

Parmelee Industries, Inc. Dba U S Safety · NSN 6540-01-272-2086 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-272-2086 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-272-2086. Primary manufacturer part number: 50118.
Features
  • Front,spectacle — FSC 6540
  • Color: BLACK
  • Bridge Width: 18.0 MILLIMETERS MM
  • End Piece Type: 7 BARREL
  • Style Designator: KEYHOLE BRIDGE WITH RIGID NOSE PADS
  • Eye Wire Maximum Horizontal Inside Diameter: 50.0 MILLIMETERS MM
  • 1 verified cross-reference
  • Primary manufacturer: Parmelee Industries, Inc. Dba U S Safety
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Front,spectacle, cataloged under National Stock Number 6540-01-272-2086, is classified within Federal Supply Class 6540 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Parmelee Industries, Inc. Dba U S Safety. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-272-2086
Primary Part Number50118
Item NameFront,spectacle
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerParmelee Industries, Inc. Dba U S Safety
StatusACTIVE
ColorBLACK
Bridge Width18.0 MILLIMETERS MM
End Piece Type7 BARREL
Style DesignatorKEYHOLE BRIDGE WITH RIGID NOSE PADS
Eye Wire Maximum Horizontal Inside Diameter50.0 MILLIMETERS MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 9
9540-00-027-9215 INTERCHANGEABLE
Beam,structural
3110-00-143-758639520 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
2825-00-317-4331 INTERCHANGEABLE
Packing Labyrinth
9540-00-404-5189 INTERCHANGEABLE
Beam,structural
4820-00-786-397111563 INTERCHANGEABLE
Valve,calibrated Flow
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5325-01-314-485050118 INTERCHANGEABLE
Lock Spring,turnlock Fastener
Dana Corp Mobile Fluid Products Div
5330-01-486-4533NB01025E-0100-8 INTERCHANGEABLE
Retainer,packing
Hunt Valve Company, Inc.
1005-01-487-243250118 INTERCHANGEABLE
Sear
American Apex Corporation
2940-01-683-737450118 INTERCHANGEABLE
Filter Element,intake Air Cleane
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
50118 Parmelee Industries, Inc. Dba U S Safety (USA)
Related Parts
9540-00-027-9215INTERCHANGEABLE
BEAM,STRUCTURAL
3110-00-143-7586INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
39520
2825-00-317-4331INTERCHANGEABLE
PACKING LABYRINTH
9540-00-404-5189INTERCHANGEABLE
BEAM,STRUCTURAL
4820-00-786-3971INTERCHANGEABLE
VALVE,CALIBRATED FLOW
11563
5325-01-314-4850INTERCHANGEABLE
LOCK SPRING,TURNLOCK FASTENER
50118
5330-01-486-4533INTERCHANGEABLE
RETAINER,PACKING
NB01025E-0100-8
1005-01-487-2432INTERCHANGEABLE
SEAR
50118
2940-01-683-7374INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
50118

Frequently Asked Questions

What is NSN 6540-01-272-2086?

NSN 6540-01-272-2086 is a Front,spectacle, manufactured by Parmelee Industries, Inc. Dba U S Safety, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-272-2086?

NSN 6540-01-272-2086 has 1 cross-referenced part number: 50118 (Parmelee Industries, Inc. Dba U S Safety).

What NSN replaces 6540-01-272-2086?

There are 9 known substitutes for 6540-01-272-2086: 9540-00-027-9215, 3110-00-143-7586, 2825-00-317-4331 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50118?

Key specifications for 50118: Color: BLACK; Special Features: FEMALE STYLE; OPAQUE IN COLOR; SAFETY BEVEL; Part Name Assigned by Controlling Agency: FRONT SPECTACLE FEMALE STYLE BLACK 50MM EYE ID 18MM BRIDGE WIDTH MM; Bridge Width: 18.0 MILLIMETERS MM. 7 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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