Whittet Higgins KMS-40 Retaining Nut M200 x 3.0
- T M200 × 3
- D 250.0 mm
- B 29.0 mm
Genuine Whittet-Higgins product, Whittet-Higgins
- Regular price
- $3,228.30
- Sale price
- $3,228.30
- Regular price
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Quantity pricingApplied at checkout
- 20–49 5% off$3,066.89 ea
- 50–99 8% off$2,970.04 ea
- 100–199 15% off$2,744.06 ea
- 200–499 18% off$2,647.21 ea
- 500+ 25% off$2,421.23 ea
Free shipping on orders over $100
Use code at checkout.
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 KMS-40
The Whittet-Higgins KMS series is a metric bearing locknut machined from corrosion-resistant stainless steel for service in corrosive, washdown, and chemically aggressive environments. It threads onto the shaft and works together with a matched MBS series lockwasher, whose tabs engage the nut to lock it in place while providing accurate angular positioning across numerous locking positions.
This arrangement secures, locks, and retains bearings and power transmission assemblies, preventing loosening due to vibration, shock, and torque without requiring any special installation tools. The KMS line is effective on both soft and hardened shafts, is rated to a maximum operating temperature of 300°F, and meets and exceeds ISO 2982-2:2013(E). It is manufactured in the USA and is RoHS compliant.
Key features
- Machined from corrosion-resistant stainless steel
- Matched with MBS series lockwashers to secure, lock, and retain bearings and power transmission assemblies
- Numerous locking positions for accurate angular positioning
- Prevents assembly loosening from vibration, shock, and torque
- Meets and exceeds ISO 2982-2:2013(E)
- Maximum operating temperature 300°F
- No special tools required for installation
- Effective on soft and hardened shafts
- Manufactured in the USA and RoHS compliant
Specifications
Whittet-Higgins KMS-40 dimensions & specifications
- PDFKMS-40 part print (opens in a new tab)
- STEP3D CAD model (opens in a new tab)
- PDFKMS series spec sheet (opens in a new tab)
Files from Whittet-Higgins. They open in a new tab.
- Type
- Locknut
- Thread T
- M200 × 3 (pitch 3 mm)
- Outside diameter (max.) D
- 250.0 mm (9.843 in)
- Face diameter (max.) F
- 226.0 mm (8.898 in)
- Width (max.) B
- 29.0 mm (1.142 in)
- Theoretical axial load
- 1,483 kN (333,392 lbf)
- Material
- Stainless Steel
- Country of origin
- USA
- Series
- Locknut KMS series (stainless)
- Standard
- ISO 2982-2:2013 meets and exceeds
- Weight
- 0.5 lb
- Brand
- Whittet-Higgins
- Part number
- KMS-40 also written KMS40
Use it with
Parts and tools for your KMS-40
What Whittet-Higgins pairs with the KMS-40. Tick what you need and add it with one click.
Same size, other versions
Other versions of the KMS-40
The same size in other Whittet-Higgins series: left-hand thread, stainless steel, high strength, precision or self-locking designs.
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$276.55
In stock
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$1,367.27
In stock
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$829.42
In stock
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$767.98
In stock
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Whittet-Higgins
NSHM-40Whittet Higgins NSHM-40 Shoelok Tangential Locking Retaining Nut
Shoelok NSHM series (metric)
$1,168.73
In stock
Part number explained
What every part of KMS-40 means
- KMS
- Locknut, Locknut KMS series (stainless)
- 40
- Size 40: M200 × 3 thread
Catalogs & documents
Whittet-Higgins KMS-40 catalogs & documents
Official catalogs and data from the manufacturer. They open as PDFs in a new tab.
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Product document
Catalog Locknut – KMS Series (Stainless) (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
KMS-40 questions & answers
What size is the Whittet-Higgins KMS-40?
The Whittet-Higgins KMS-40 is a locknut. Thread: M200 × 3 (pitch 3 mm). Outside diameter: 250.0 mm (9.843 in). Face diameter: 226.0 mm (8.898 in). Width: 29.0 mm (1.142 in). These are Whittet-Higgins' maximum sizes from its spec sheet.
What thread does the KMS-40 fit?
The Whittet-Higgins KMS-40 fits a M200 × 3 right-hand shaft thread (pitch 3 mm).
Does the KMS-40 need a lockwasher?
Yes. Whittet-Higgins matches the KMS-40 with the MBS-40 lockwasher. The washer's inner tab sits in the shaft's keyway, and after tightening one of its outer tangs is bent into a slot of the locknut so the nut cannot turn.
What temperature can the KMS-40 take?
Whittet-Higgins rates the Locknut KMS series (stainless) for up to 300 °F (149 °C).
What is the KMS-40 made of?
Locknut: stainless steel.
Is there a drawing or CAD model of the KMS-40?
Yes. Whittet-Higgins publishes a part print (PDF) and a 3D CAD model (STEP) for the KMS-40. The drawing on this page is made from the same catalog dimensions.
How do I install the KMS-40?
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 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 KMS-40 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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