We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

STANDARD LOCKNUT Bearing Lock Nut: AN21, AN21, Inch - Bearing Locknuts
STANDARD LOCKNUTBearing Locknuts

STANDARD LOCKNUT Bearing Lock Nut: AN21, AN21, Inch

The STANDARD LOCKNUT Bearing Lock Nut, model AN21, is an inch-sized bearing locknut with a 5-inch face diameter. This product is designed for securing bearings onto shafts in industrial equipment applications.

SKU 3G-OTH-96413

Also listed as: AN 21 · AN-21

Brand
STANDARD LOCKNUT
Item
Bearing Lock Nut: AN21, AN21, Inch
Category
Bearing Locknuts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

STANDARD LOCKNUT
Manufacturer Part Number
AN21
Industry Number
AN21

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

STANDARD LOCKNUT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The STANDARD LOCKNUT Bearing Lock Nut, model AN21, is an inch-sized bearing locknut with a 5-inch face diameter. This product is designed for securing bearings onto shafts in industrial equipment applications.

Frequently Asked Questions

What is a STANDARD LOCKNUT AN21 bearing lock nut used for?

The STANDARD LOCKNUT AN21 bearing lock nut secures bearings onto shafts in industrial equipment. It prevents axial movement under load, ensuring reliable operation in conveyors, gearboxes, and rotating machinery across machining, power transmission, and material handling applications.

What are the specifications of the STANDARD LOCKNUT AN21?

The STANDARD LOCKNUT AN21 is an inch-sized bearing lock nut with a 5-inch face diameter. Its manufacturer part number and industry number are both AN21. This design provides a secure fit for standard bearing assemblies in industrial drives and shaft systems.

Where to buy a STANDARD LOCKNUT AN21 bearing lock nut worldwide?

3G Electric supplies the STANDARD LOCKNUT AN21 bearing lock nut to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this inch-sized lock nut, ensuring it reaches your facility for bearing retention applications.

How to install a STANDARD LOCKNUT AN21 bearing lock nut?

To install the STANDARD LOCKNUT AN21, clean the shaft threads and bearing face, then hand-thread the nut onto the shaft until snug. Use a spanner wrench on the face notches to tighten to the torque specified by the equipment manufacturer, ensuring the bearing is fully seated.

Used in

Common applications for STANDARD LOCKNUT
Conveyor systems — STANDARD LOCKNUT bearing locknuts and lock washers secure bearings on conveyor roller shafts
Pump assemblies — Withdrawal sleeve assemblies like SNW3028 mount bearings on pump shafts for alignment and retention
Gearbox maintenance — STANDARD LOCKNUT lock washers (e.g., W38) used with N00 lock nuts to secure bearings in gearbox housings
Compressor units — Bearing locknuts (e.g., N14) provide axial clamping for compressor rotor bearings
Industrial fans — STANDARD LOCKNUT lock washers (e.g., TW128) with NHE lock nuts retain bearings in fan shaft assemblies
Machine tool spindles — Withdrawal sleeve assemblies (e.g., SNP3064) enable precise bearing mounting on spindle shafts

STANDARD LOCKNUT Products

3G Electric supplies STANDARD LOCKNUT bearing locknuts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
STANDARD LOCKNUT Bearing Lock Nut: AN20, AN20, Inch, 4 13/16 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN20, AN20, Inch, 4 13/16 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN22, AN22, Inch, 5 9/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN22, AN22, Inch, 5 9/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN18, AN18, Inch, 4 9/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN18, AN18, Inch, 4 9/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN24, AN24, Inch, 5 11/16 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN24, AN24, Inch, 5 11/16 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN40, AN40, Inch, 9 5/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN40, AN40, Inch, 9 5/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN32, AN32, Inch, 7 7/16 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN32, AN32, Inch, 7 7/16 in Face Dia

More from STANDARD LOCKNUT

View all STANDARD LOCKNUT parts
STANDARD LOCKNUT Bearing Lock Nut: AN19, AN19, Inch, 4 9/16 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN19, AN19, Inch, 4 9/16 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: KM15, KM15, Metric, 3 17/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: KM15, KM15, Metric, 3 17/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: AN38, AN38, Inch, 8 25/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: AN38, AN38, Inch, 8 25/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: N10, N10, Inch, 2 7/16 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: N10, N10, Inch, 2 7/16 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: KM14, KM14, Metric, 3 11/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: KM14, KM14, Metric, 3 11/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: N16, N16, Inch, 3 27/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: N16, N16, Inch, 3 27/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: N044, N044, Inch, 9 17/32 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: N044, N044, Inch, 9 17/32 in Face Dia
STANDARD LOCKNUT Bearing Lock Nut: N048, N048, Inch, 10 5/8 in Face Dia
STANDARD LOCKNUT
STANDARD LOCKNUT Bearing Lock Nut: N048, N048, Inch, 10 5/8 in Face Dia