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Vertical close-up of a matte grey tamper-proof Torx bit showing hollow center pin and ASTA logo on hex shankAngled view of a short 1/4-inch hex tamper Torx bit with ASTA marking and retention notchesDiagonal shot of tamper Torx bit showing hollow center tip, six lobes and ASTA engraved on hex shankTechnical diagram of 1/4-inch tamper Torx bit with dimensions L, L1, ØD and 1/4" (6.35 mm) hex drive indicated

Torx H40 Tamper-Proof Bit, 8mm x 30mm, 1/4-Inch Hex Drive

Security Torx H40 tamper bit with hollow center pin; ideal for anti-tampering applications in automotive and industrial assembly.

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Description

Torx H40 Tamper-Proof Bit, 8mm x 30mm, 1/4-Inch Hex Drive

Brief Overview

This 8mm x 30mm Torx H40 security bit is purpose-built for tamper-resistant fastening applications where standard hex or Torx fasteners are insufficient. The hollow-center pin design prevents unauthorized access while maintaining reliable engagement during legitimate assembly and maintenance operations. For shops requiring a complete security bit inventory, complementary options include smaller profile tamper bits and larger security profiles to cover diverse fastening requirements across your service scope.

Key Features

  • Tamper-Proof Design: Hollow-center pin profile prevents removal with standard Torx drivers
  • Torx H40 Profile: 6-lobed star geometry with optimized contact angles for reduced cam-out
  • 1/4-Inch Hex Drive: Direct compatibility with standard 1/4" bit holders and quick-change chucks
  • Compact 30mm Length: Ideal for tight access spaces and precision assembly work
  • Hardened Tool Steel: Shot-peened, corrosion-resistant finish for durability and extended tool life
  • Consistent Machining: Precision-ground hex shank with subtle retention notches for secure seating

Why This Bit Matters for Your Shop

Security & Compliance Anti-tampering fasteners are increasingly mandated in automotive (especially steering and suspension), aerospace, and consumer electronics applications. Stock this bit to meet OEM specifications and service requirements without sourcing delays.

Inventory Efficiency One compact size covers multiple security applications. The 30mm length accommodates most panel and component fasteners, reducing the SKU count needed on your bench while maintaining professional service capabilities.

Customer Confidence Offering tamper-resistant fastening demonstrates technical competence and security awareness—a differentiator when servicing high-value or sensitive assemblies.

Technical Specifications

Specification Value
Bit Type Torx H40 (Security/Tamper-Proof)
Overall Length 30 mm
Working Length (L1) 8 mm
Hex Drive Size 1/4" (6.35 mm)
Profile 6-lobed star with hollow center pin
Material Hardened tool steel
Finish Shot-peened, satin grey metallic
Drive Compatibility Standard 1/4" bit holders, impact-rated chucks
Catalog Number A-B830TH40

Reseller Value Proposition

Margin & Turnover Security fastener bits command premium pricing due to specialized tooling and lower volume competitors. Build this into your service kits and retail offering to improve per-unit margin.

Bundling Opportunity Package with complementary tamper profiles to create security bit assortments for automotive technicians and assembly shops—standardize your offering and increase average order value.

Service Differentiation Secure fastening is no longer niche; it's mainstream across automotive electrical, suspension, and body work. Having the right bit in stock prevents job delays and builds repeat customer relationships.

Stock this bit to close the gap between standard fastening and security-critical assembly work. Professional shops expect anti-tampering solutions on the shelf.