S-93126A140 2"-12 Locknuts

Locknuts

1154FA00004 Locknuts
1154FA00004 Locknuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 1154FA00004
Equivalent to mcmaster :
93126A140

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex

Dimension Parameters

Width 3 1/8"
Height 1 43/64"

Thread Parameters

Thread Type UN
Thread Size 2"-12
Thread Direction Right Hand
Thread Spacing Extra Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Extra-Wide Thin

Material & Strength Parameters

Material Black-Phosphate Steel
Strength Class ASTM Grade C

Temperature & Environment Parameters

Insert Maximum Temperature 250°F

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant
Locking Type Nylon Insert
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening under dynamic loads
  • Enhanced temperature performance with nylon insert rated for continuous service up to 250°F (121°C)
  • Optimized space utilization with extra-wide thin profile design providing maximum bearing surface in confined areas
  • Precise thread engagement with Class 2B thread fit ensuring smooth assembly and consistent torque values
  • Exceptional corrosion protection through black-phosphate steel finish resisting rust in demanding environments
  • High-strength reliability meeting ASTM Grade C specifications for heavy-duty industrial applications
  • Regulatory compliance assurance with REACH and RoHS 3 certifications for global market acceptance

Professional Applications & Engineering Value

This 2"-12 extra fine thread nylon insert locknut delivers critical vibration resistance in high-stress industrial environments where conventional fasteners fail. The black-phosphate steel construction provides durable corrosion protection while the nylon insert locking mechanism maintains clamping force even under extreme vibration and thermal cycling. Engineered with UN extra fine threads and Class 2B thread fit, this locknut ensures precise engagement in applications requiring fine adjustment capabilities. The extra-wide thin profile maximizes contact area while minimizing overall height, making it ideal for space-constrained assemblies in heavy machinery, transportation equipment, and industrial manufacturing systems where reliability is paramount.

Specification Summary & Compliance

This locknut features 2"-12 UN extra fine threads with Class 2B thread fit for precision engagement. Manufactured to ASTM Grade C strength requirements with dimensions of 3 1/8" width and 1 43/64" height. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory acceptance for industrial applications worldwide.

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