Thread types reference
28 thread standards — drill sizes, tolerances, profiles
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Home
Tap drill chart
Threading bar diameter
Thread pitch chart
Speeds & feeds
Thread standards
Thread types
Spindle speed
Lathe speed
Drill size converter
Metric threads
Metric (M)
Metric conical → app
Trapezoidal → app
Pipe threads
NPT → app
BSPT → app
G / BSPP → app
Pipe conical → app
Inch threads
UNC / UNF / UNEF → app
BSW → app
BSF → app
ACME → app
Special threads
Worm → app
Knuckle → app
API → app
PG → app
Full reference available in the Handbook Locksmith app
GET IT ON
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★ 4.7 (800+) · 100K+ · Thread Reference
GET IT ON
Google Play
★ 4.7 (800+) · 100K+ · Thread Reference
