How does shipping work for orders on MRO Exchange?

Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Whittet-Higgins BL-24 Bearlok Retaining Nut 2-3/8 in Shaft Open Box - Unused

$149.99 USD

Sale Sold out

ConditionOpen Box - Unused MPNBL-24 Stock #0226-00178

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 10.0 lbs

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The Whittet-Higgins BL-24 is a Bearlok mechanical lock retaining nut used to adjust, pre-load, and secure bearings and other power transmission components to shafts and spindles. The assembly consists of a base nut, a compression ring, and socket head cap screws. The base nut has a thick-walled main body and a thin, externally tapered, slit rear section. When the cap screws are tightened, the ring is drawn against the tapered back of the nut, driving the rear sections radially inward to uniformly clamp the threads against the shaft.

Confirmed specifications per Whittet-Higgins published data include a 4.716 in. 12 TPI right hand UNS thread, a 6.500 in. outside diameter, a 5.430 in. face diameter, a 1.102 in. width, and a rated axial load capacity of 126,800 lbs. The unit uses M6 lock screws and is finished in manganese phosphate for corrosion resistance. The BL-24 replaces SKF AN24, standard AN24, and Taperline HTLN 24 PH and TLN 24 PH bearing locknuts.

This Bearlok meets and exceeds ANSI/AFBMA Standard 8.1 1986 and ISO 2982 specifications and is RoHS compliant. Typical applications include high speed and high precision rotating assemblies, balanced spindles, gearboxes, pumps, off road and mining equipment, and other power transmission systems where uniform 360 degree thread clamping and resistance to loosening under vibration, shock, and torque are required. The unit ships as a one piece kit in original Whittet-Higgins packaging, UPC 0751968102403, lot 87833.

Stock # 0226-178

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.