Whittet Higgins PWT-12 Lockwasher Precision
- d 2.400″
- D 3.328″
- s 0.064″
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $20.34
- Sale price
- $20.34
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$19.32 ea
- 50–99 8% off$18.71 ea
- 100–199 15% off$17.29 ea
- 200–499 18% off$16.68 ea
- 500+ 25% off$15.26 ea
Same-day shipping
Order by 3 PM ET for same-day shipping
Free shipping on orders over $100
Use code at checkout.
Whittet-Higgins PWT-12
$20.34
Why Apollo USA
Bearing locknuts and retaining parts from Apollo Industries, Oxford, Michigan
Apollo Industries supplies bearings, locknuts, lockwashers and maintenance tools to businesses across the US, with real people on the phone when you need a part matched.
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Same-day shipping
Order by 3 PM EST for same-day shipping.
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Free shipping over $100
All orders over $100 ship free by ground with code FREESHIP.
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90-day returns
Hassle-free returns on unused items within 90 days.
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Price match
Show us a competitor's advertised price on the same item and we will match it.
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Expert support
Support staff available by phone, web chat or email.
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Need tax exemption or quantity pricing?
We offer special rates for businesses and bulk orders.
Talk to a parts specialist
2695 Lake George RdOxford, MI 48370
Overview
Whittet-Higgins PWT-12 Lockwasher precision
The Whittet-Higgins PWT-12 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-12 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.
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
Specifications
Whittet-Higgins PWT-12 dimensions & specifications
- PDFPWT-12 part print (opens in a new tab)
- STEP3D CAD model (opens in a new tab)
- PDFPWT series spec sheet (opens in a new tab)
Files from Whittet-Higgins. They open in a new tab.
- Type
- Precision lockwasher
- Bore d
- 2.400 in (60.96 mm)
- Outside diameter (max.) D
- 3.328 in (84.53 mm)
- Face diameter (max.) F
- 2.708 in (68.78 mm)
- Thickness (max.) s
- 0.064 in (1.63 mm)
- Material
- Carbon Steel
- Country of origin
- USA
- Series
- Precision lockwasher PWT series (small profile)
- Standard
- ANSI/ABMA 8.2-1999 meets and exceeds
- Weight
- 0.04 lb
- Brand
- Whittet-Higgins
- Part number
- PWT-12 also written PWT12
- UPC / EAN
- 751968451204
Use it with
Parts and tools for your PWT-12
What Whittet-Higgins pairs with the PWT-12. Tick what you need and add it with one click.
Same size, other versions
Other versions of the PWT-12
The same size in other Whittet-Higgins series: left-hand thread, stainless steel, high strength, precision or self-locking designs.
Part number explained
What every part of PWT-12 means
- PWT
- Precision lockwasher, Precision lockwasher PWT series (small profile)
- 12
- Size 12: 2.400″ bore
Catalogs & documents
Whittet-Higgins PWT-12 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Catalog
Whittet-Higgins Handbook of Engineering & Design (rev. 2018) (opens in a new tab)
PDF · 93.0 MB · English
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Mounting
Whittet-Higgins Assembly Instructions (opens in a new tab)
PDF · 0.2 MB · English
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Safety
Whittet-Higgins Standard Statements: Prop 65, RoHS3, REACH (opens in a new tab)
PDF · 0.1 MB · English
About the brand
About Whittet-Higgins
Bearing locknuts, lockwashers and retaining devices from Rhode Island since 1914.
Henry Whittet and John Higgins founded the Whittet-Higgins Manufacturing Company in 1914 in the basement of a mill on Congress Avenue in Providence, Rhode Island, making super-precision bearing retaining components and machined parts for local machine builders such as Brown & Sharpe.
In 1967 the company was sold to a young mechanical engineer, and in 1969 it moved to 33 Higginson Avenue in Central Falls, Rhode Island, where it still makes its products. Its first line of 66 locknuts and lockwashers has grown to more than 4,300 standard parts, made on robotic CNC systems.
Besides the standard N/AN and KM locknuts with W and MB lockwashers, Whittet-Higgins makes its own self-locking designs: Bearhug prevailing-torque locknuts, Bearlok, Shoelok and Tangentlok clamping locknuts, clampnuts and splitnuts, plus adapter sets, clamp collars and installation tools. The company is family owned and operated.
Genuine Whittet-Higgins product from an authorized retailer
Founded
1914
Headquarters
Central Falls, Rhode Island, USA
Standard parts
More than 4,300
Made in
Central Falls, Rhode Island
Known for
- Bearing locknuts and lockwashers, inch and metric
- Bearhug self-locking locknuts
- Clampnuts, splitnuts and clamp collars
- Adapter sets and installation tools
Apollo Industries is an authorized Whittet-Higgins retailer. All Whittet-Higgins trademarks and product names are the property of their respective owners.
FAQ
PWT-12 questions & answers
What size is the Whittet-Higgins PWT-12?
The Whittet-Higgins PWT-12 is a precision lockwasher. Bore: 2.400 in (60.96 mm). Outside diameter: 3.328 in (84.53 mm). Face diameter: 2.708 in (68.78 mm). Thickness: 0.064 in (1.63 mm). These are Whittet-Higgins' maximum sizes from its spec sheet.
Which locknut goes with the PWT-12?
Whittet-Higgins matches the PWT-12 with the PT-12 locknut of the same size. The washer's inner tab goes in the shaft's keyway; after tightening, bend one outer tang into a slot of the locknut.
What temperature can the PWT-12 take?
Whittet-Higgins rates the Precision lockwasher PWT series (small profile) for up to 300 °F (149 °C).
What is the PWT-12 made of?
Lockwasher: carbon steel.
Is there a drawing or CAD model of the PWT-12?
Yes. Whittet-Higgins publishes a part print (PDF) and a 3D CAD model (STEP) for the PWT-12. The drawing on this page is made from the same catalog dimensions.
How do I install the PWT-12?
Follow Whittet-Higgins' assembly instructions for this part (PDF). Fit the lockwasher with its inner tab in the shaft keyway, tighten the locknut to the bearing maker's preload, then bend the nearest tang into a slot.
Is this a genuine Whittet-Higgins lockwasher?
Yes. Apollo Industries is an authorized Whittet-Higgins retailer, and every Whittet-Higgins part we sell is genuine, made by Whittet-Higgins in Central Falls, Rhode Island, USA.
Do you ship the PWT-12 the same day?
In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.
Can I get quantity pricing or buy tax-exempt?
Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.
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