Whittet Higgins CNC6-16 Clampnut
- T 0.375-16
- D 0.875″
- B 0.344″
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $6.00
- Sale price
- $6.00
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$5.70 ea
- 50–99 8% off$5.52 ea
- 100–199 15% off$5.10 ea
- 200–499 18% off$4.92 ea
- 500+ 25% off$4.50 ea
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Whittet-Higgins CNC6-16
$6.00
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 CNC6-16 Clampnut
The Whittet-Higgins CNC6-16 is a one-piece, mechanically self-locking clampnut with a coarse (UNC) thread, designed to retain and preload components on a threaded shaft without a separate locknut and lockwasher. Locking and adjustment are achieved through a tangential (X-axis) socket-head clamp screw that contracts the threaded body around the shaft, providing infinite adjustment and preload while not damaging the shaft threads. The standard nut uses a carbon steel base with a hardened alloy clamp screw and a black oxide with wax finish for corrosion resistance, with stainless steel and aluminum alloy versions also offered in the same series. It carries a maximum operating temperature rating of 300 deg F, is manufactured in the USA, and is RoHS compliant.
Key features
- One-piece mechanically self-locking clampnut - no separate locknut or lockwasher required
- Tangential (X-axis) socket-head clamp screw allows locking and adjustment from the side
- Infinite adjustment and preloading capability
- Coarse (UNC) thread series
- Carbon steel base nut with hardened alloy clamp screw and black oxide with wax finish (stainless steel and aluminum alloy variants available)
- Maximum operating temperature of 300 deg F
- Does not damage shaft threads when secured; resists loosening from vibration, shock, and torque
- Manufactured in the USA and RoHS compliant
Specifications
Whittet-Higgins CNC6-16 dimensions & specifications
- PDFCNC6-16 part print (opens in a new tab)
- STEP3D CAD model (opens in a new tab)
- PDFCNC series spec sheet (opens in a new tab)
Files from Whittet-Higgins. They open in a new tab.
- Type
- One-piece clampnut
- Thread T
- 0.375-16 (9.52 mm, 16 threads per inch)
- Outside diameter (max.) D
- 0.875 in (22.22 mm)
- Face diameter (max.) F
- 0.594 in (15.09 mm)
- Width (max.) B
- 0.344 in (8.74 mm)
- Theoretical axial load
- 4,900 lbf (21.8 kN)
- Socket head cap screw
- 6-32
- Suggested screw torque
- 25 in-lb (2.8 N·m)
- Material
- Carbon Steel (alloy fastener)
- Country of origin
- USA
- Series
- One-piece clampnut CNC series (coarse)
- Weight
- 1.0 lb
- Brand
- Whittet-Higgins
- Part number
- CNC6-16 also written CNC616
- UPC / EAN
- 751968220619
Same size, other versions
Other versions of the CNC6-16
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 CNC6-16 means
- CNC
- One-piece clampnut, One-piece clampnut CNC series (coarse)
- 6-16
- Size 6-16: 0.375-16 thread
Catalogs & documents
Whittet-Higgins CNC6-16 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Product document
Catalog One-Piece Clampnut – CNB Series (Inch) (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
CNC6-16 questions & answers
What size is the Whittet-Higgins CNC6-16?
The Whittet-Higgins CNC6-16 is a one-piece clampnut. Thread: 0.375-16 (9.52 mm, 16 threads per inch). Outside diameter: 0.875 in (22.22 mm). Face diameter: 0.594 in (15.09 mm). Width: 0.344 in (8.74 mm). These are Whittet-Higgins' maximum sizes from its spec sheet.
What thread does the CNC6-16 fit?
The Whittet-Higgins CNC6-16 fits a 0.375-16 right-hand shaft thread (9.52 mm, 16 threads per inch).
Does the CNC6-16 need a lockwasher?
No. The Whittet-Higgins CNC6-16 locks itself: a cap screw closes the nut's slit and clamps it onto the thread. It needs no lockwasher and no keyway in the shaft.
What temperature can the CNC6-16 take?
Whittet-Higgins rates the One-piece clampnut CNC series (coarse) for up to 300 °F (149 °C).
What is the CNC6-16 made of?
Base threaded nut: carbon steel; Fastener: hardened alloy.
Is there a drawing or CAD model of the CNC6-16?
Yes. Whittet-Higgins publishes a part print (PDF) and a 3D CAD model (STEP) for the CNC6-16. The drawing on this page is made from the same catalog dimensions.
How do I install the CNC6-16?
Follow Whittet-Higgins' assembly instructions for this part (PDF).
Is this a genuine Whittet-Higgins clampnut?
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 CNC6-16 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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