S-90750A400 3/4"-10 Thumb Nuts

Thumb Nuts

1027FA00004 Thumb Nuts
1027FA00004 Thumb Nuts

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

Part No.
Part No. 1027FA00004
Equivalent to mcmaster :
90750A400

Basic Information

System of Measurement Inch
Nut Type Thumb

Dimension Parameters

Width 3 1/2"
Height 1 1/2"

Thread Parameters

Thread Type UNC
Thread Size 3/4"-10
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Thumb Nut Head Shape Wing
Wing Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant

Geometric Parameters

Base Diameter 1 1/4"
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Maximum hand-tightening efficiency with standard wing profile for secure grip without tools
  • Superior corrosion resistance through 18-8 stainless steel construction in harsh environments
  • Reliable coarse thread engagement with UNC 3/4"-10 specification for quick assembly/disassembly
  • Precision thread compatibility ensured by Class 2B fit for consistent mating with threaded components
  • Enhanced stability from 1 1/4" base diameter providing superior load distribution
  • Right-hand thread design optimized for standard industrial applications and operator familiarity
  • Full regulatory compliance meeting RoHS 3 and REACH standards for global supply chain integration

Professional Applications & Engineering Value

This heavy-duty thumb nut delivers exceptional value in maintenance-heavy environments where frequent adjustments are required. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for outdoor equipment, marine applications, and food processing machinery where moisture exposure is common. The coarse UNC threads enable rapid installation and removal while resisting cross-threading, significantly reducing assembly time in production lines. The generous 3 1/2" width across wings ensures comfortable hand-tightening even with gloves, while the 1 1/4" base diameter creates a stable bearing surface that prevents loosening under vibration. These industrial thumb nuts eliminate the need for tools in applications requiring regular access, from electrical enclosures to machinery guards.

Specification Summary & Compliance

This thumb nut features 3/4"-10 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise engagement with matching male threads. The inch system measurement provides 1 1/4" base diameter and 3 1/2" width across wings with standard wing nut profile. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted substances for environmentally responsible procurement.

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