Whittet-Higgins PWT-15 Precision Lockwasher – 2.973in bore, 4.093in OD
Whittet-Higgins PWT-15 Precision Lockwasher – 2.973in bore, 4.093in OD
    Whittet-Higgins PWT-15 Precision Lockwasher – 2.973in bore, 4.093in OD
Whittet-Higgins PWT-15 Precision Lockwasher – 2.973in bore, 4.093in OD
Authorized Retailer Made in the USA Top Rated

Whittet Higgins PWT-21 Lockwasher Precision

Brand: Whittet-Higgins
$162.46
$162.46
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Whittet-Higgins

Whittet-Higgins

Whittet-Higgins specializes in high-quality bearing retention and shaft-locking products used in demanding industrial applications. Its core product range includes precision locknuts, lockwashers, adapter and withdrawal sleeves, shaft nuts, and related installation tools designed to securely position bearings and rotating components. The company offers both inch and metric options, including heavy-duty and corrosion-resistant designs for power transmission, machinery, and other industrial equipment.

Key Features

  • Carbon steel construction
  • Meets and exceeds ANSI/ABMA 8.2-1999 specifications
  • Precision-ground parallel faces ensure assembly straightness to the threaded shaft
  • Small profile: smaller diameter and thickness for limited-space applications
  • Keyed and tanged design locks into the spanner slot of the mating locknut
  • Pairs with PT series locknuts to secure, lock, and retain bearings
  • Provides accurate angular positioning with numerous locking positions
  • Max operating temperature 300 Deg F
  • Made in USA and RoHS compliant

Description

The Whittet-Higgins PWT-21 is a precision bearing lockwasher with precision-ground parallel faces that keep the assembly square to the threaded shaft. A keyed inner bore seats on the shaft keyway to prevent rotation, while an external tang bends into a spanner slot of the mating locknut to positively lock the assembly against loosening from vibration, shock, and torque.

Designed to the ANSI/ABMA 8.2-1999 specification, the PWT-21 pairs with PT series locknuts to secure, lock, and retain bearings and power transmission components. Its small profile delivers a smaller outside diameter and reduced thickness for limited-space, lighter axial-load applications, providing accurate angular positioning across numerous locking positions. Made from carbon steel, manufactured in the USA, and RoHS compliant.

Specifications

PWT-21

Specification Value
Thread 4.122-12
Outside Diameter (inches) 5.438
Face Diameter (inches) 5.000
Width (inches) 0.485-0.510
Material Steel
Weight 0.112 lb (50.802 g)
Country of Origin USA

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