PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2-691Temple,spectacle

Parmelee Industries, Inc. Dba U S Safety · NSN 6540-01-145-8139 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-145-8139 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-145-8139. Primary manufacturer part number: 2-691.
Features
  • Temple,spectacle — FSC 6540
  • Design Type: NICKEL-SILVER CORE, PADDLE
  • Material: PLASTIC CELLULOSE ACETATE
  • Color: BROWN
  • 1 verified cross-reference
  • Primary manufacturer: Parmelee Industries, Inc. Dba U S Safety
Applications
  • Applications requiring Plastic Cellulose Acetate construction
General Description

The Temple,spectacle, cataloged under National Stock Number 6540-01-145-8139, 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 3 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: PR.

Technical Specifications
ParameterValue
NSN6540-01-145-8139
Primary Part Number2-691
Item NameTemple,spectacle
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerParmelee Industries, Inc. Dba U S Safety
StatusACTIVE
Design TypeNICKEL-SILVER CORE, PADDLE
MaterialPLASTIC CELLULOSE ACETATE
ColorBROWN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssuePR
Verified Substitutes 12
5330-00-084-75662M1450 INTERCHANGEABLE
Disk Solid Plain
Caterpillar Inc Div Caterpillar Defense
3110-00-100-07371193749 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Chrysler Realty Company Llc Dba Daimler Chrysler
3110-00-144-8501 INTERCHANGEABLE
Bearing,ball,annular
2530-00-421-3845F59170 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
1650-00-513-48682691 INTERCHANGEABLE
Cap,linear Actuating Cylinder
Goodrich Corporation
5915-00-679-9363543-1781-003 INTERCHANGEABLE
Filter,band Pass
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5905-00-805-8507 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5998-00-929-6091BH2691 INTERCHANGEABLE
Circuit Card Assembly
Howell Instruments, Inc. Dba Howell Instruments Inc
5985-00-975-6291134204-0005 INTERCHANGEABLE
Attenuator,variable
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5998-01-023-7550 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
2-691 PRIMARY Parmelee Industries, Inc. Dba U S Safety (USA)
Related Parts
5330-00-084-7566INTERCHANGEABLE
DISK SOLID PLAIN
2M1450
3110-00-100-0737INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
1193749
3110-00-144-8501INTERCHANGEABLE
BEARING,BALL,ANNULAR
2530-00-421-3845INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
F59170
1650-00-513-4868INTERCHANGEABLE
CAP,LINEAR ACTUATING CYLINDER
2691
5915-00-679-9363INTERCHANGEABLE
FILTER,BAND PASS
543-1781-003
5905-00-805-8507INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5998-00-929-6091INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
BH2691
5985-00-975-6291INTERCHANGEABLE
ATTENUATOR,VARIABLE
134204-0005
5998-01-023-7550INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1660-01-121-6043INTERCHANGEABLE
ADAPTER,ANGLE
2691
5975-01-354-9989INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2691

Frequently Asked Questions

What is NSN 6540-01-145-8139?

NSN 6540-01-145-8139 is a Temple,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 6540-01-145-8139?

NSN 6540-01-145-8139 has 1 cross-referenced part number: 2-691 (Parmelee Industries, Inc. Dba U S Safety).

What NSN replaces 6540-01-145-8139?

There are 12 known substitutes for 6540-01-145-8139: 5330-00-084-7566, 3110-00-100-0737, 3110-00-144-8501 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2-691?

Key specifications for 2-691: Part Name Assigned by Controlling Agency: TEMPLE SPECTACLE CELLULOSE ACETATE PADDLE TYPE BROWN 4.75IN LONG IN; Design Type: NICKEL-SILVER CORE, PADDLE; Material: PLASTIC CELLULOSE ACETATE; Special Features: POLISHED SURFACE TREATMENT. 6 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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