Whittet Higgins BL-16 Bearhug Retaining Nut
- T 3.137-12
- D 4.720″
- B 0.984″
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $205.50
- Sale price
- $205.50
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$195.23 ea
- 50–99 8% off$189.06 ea
- 100–199 15% off$174.68 ea
- 200–499 18% off$168.51 ea
- 500+ 25% off$154.13 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 BL-16
$205.50
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 BL-16 Locknut
The Whittet-Higgins BL-16 is a BEARLOK mechanical self-locking bearing retaining nut that threads onto a shaft or spindle to position and secure bearings, sleeves, and other components against an axial shoulder. Tightening its socket-head cap screws draws a hardened alloy compression ring into uniform 360-degree clamping contact with the shaft threads, locking the nut without damaging the threads and allowing infinite adjustment and preloading with longitudinal (Z-axis) access to the assembly.
Its balanced design suits high-speed and high-precision assemblies, while the self-locking action resists loosening from vibration, shock, and torque and eliminates the need for a separate locknut, lockwasher, or shaft keyway. The BL-16 pairs a carbon steel base threaded nut with a hardened alloy compression ring and fasteners, is manganese phosphate coated for corrosion resistance, and meets and exceeds the specifications of ANSI/ABMA 8.2-1999.
Key features
- Mechanical self-locking BEARLOK retaining nut that threads onto a shaft to position and secure bearings and components
- Socket-head cap screws draw a hardened alloy compression ring into uniform 360-degree thread clamping to the center of the shaft
- Balanced design for high-speed applications; resists loosening from vibration, shock, and torque
- Infinite adjustment and preloading with longitudinal (Z-axis) access; does not damage shaft threads when secured
- Carbon steel base threaded nut with hardened alloy compression ring and hardened alloy fasteners
- Manganese phosphate coated for corrosion resistance
- Maximum operating temperature 300 degrees F
- Meets and exceeds the specifications of ANSI/ABMA 8.2-1999
- Manufactured in USA and RoHS compliant
Specifications
Whittet-Higgins BL-16 dimensions & specifications
Files from Whittet-Higgins. They open in a new tab.
- Type
- Bearlok locknut
- Thread T
- 3.137-12 (79.68 mm, 12 threads per inch)
- Outside diameter (max.) D
- 4.720 in (119.89 mm)
- Face diameter (max.) F
- 3.700 in (93.98 mm)
- Width (max.) B
- 0.984 in (24.99 mm)
- Theoretical axial load
- 185,800 lbf (826.5 kN)
- Socket head cap screw
- M6
- Suggested screw torque
- 70 in-lb (7.9 N·m)
- Material
- Carbon Steel (alloy fastener)
- Country of origin
- USA
- Series
- Bearlok BL series (inch)
- Standard
- ANSI/ABMA 8.2-1999 meets and exceeds
- Weight
- 2.32 lb
- Brand
- Whittet-Higgins
- Part number
- BL-16 also written BL16
- UPC / EAN
- 751968101604
Use it with
Parts and tools for your BL-16
What Whittet-Higgins pairs with the BL-16. Tick what you need and add it with one click.
Same size, other versions
Other versions of the BL-16
The same size in other Whittet-Higgins series: left-hand thread, stainless steel, high strength, precision or self-locking designs.
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$34.43
In stock
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$57.28
In stock
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Whittet-Higgins
BHL-16Whittet Higgins BHL-16 Bearhug Left Handed Retaining Nut
Bearhug BHL series (left-handed) · left-hand thread
$107.30
In stock
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Whittet-Higgins
BHM-16Whittet Higgins BHM-16 Bearhug Retaining Nut Hardened Alloy - High Strength
Bearhug BHM series (high strength)
$176.72
In stock
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Whittet-Higgins
BHS-16Whittet Higgins BHS-16 Bearhug Retaining Nut - Stainless
Bearhug BHS series (stainless)
$240.16
In stock
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$94.48
In stock
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$111.96
In stock
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Whittet-Higgins
NL-16Whittet Higgins NL-16 Locknut
Locknut NL series (left-handed) · left-hand thread
$63.83
In stock
Part number explained
What every part of BL-16 means
- BL
- Bearlok locknut, Bearlok BL series (inch)
- 16
- Size 16: 3.137-12 thread
Catalogs & documents
Whittet-Higgins BL-16 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Product document
Catalog Bearlok – BL Series (Inch) (opens in a new tab)
PDF · AllPagesDrop pages
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Product document
Assembly Instructions (opens in a new tab)
PDF · AllPagesDrop pages
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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
BL-16 questions & answers
What size is the Whittet-Higgins BL-16?
The Whittet-Higgins BL-16 is a Bearlok locknut. Thread: 3.137-12 (79.68 mm, 12 threads per inch). Outside diameter: 4.720 in (119.89 mm). Face diameter: 3.700 in (93.98 mm). Width: 0.984 in (24.99 mm). These are Whittet-Higgins' maximum sizes from its spec sheet.
What thread does the BL-16 fit?
The Whittet-Higgins BL-16 fits a 3.137-12 right-hand shaft thread (79.68 mm, 12 threads per inch).
Does the BL-16 need a lockwasher?
No. The Whittet-Higgins BL-16 locks itself: cap screws, tightened from the face, clamp its hardened compression ring onto the thread all the way round. It needs no lockwasher and no keyway in the shaft.
What temperature can the BL-16 take?
Whittet-Higgins rates the Bearlok BL series (inch) for up to 300 °F (149 °C).
What is the BL-16 made of?
Base threaded nut: carbon steel; Compression ring: hardened alloy; Fasteners: hardened alloy.
How do I install the BL-16?
Follow Whittet-Higgins' assembly instructions for this part (PDF).
Is this a genuine Whittet-Higgins locknut?
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 BL-16 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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