TECHNICAL LIBRARY
Technical Library
Common problems in fastener design and procurement, addressed from the perspective of a manufacturer with over 50 years in the trade.
All 10
Materials & Grades
Strength & Mechanical Properties
Design & Selection
Finishes & Regulations
Quality & Testing
Design & Selection
My Stainless Bolt Seized Halfway In — Galling
The most common failure in stainless fastening. Causes and practical prevention.
gallingcold weldingstainless seizingthread seizure
Design & Selection
Reading a Screw Designation — What M4 × 0.7 × 10 Means
Breaking down the fastener callout on a purchase order or drawing, item by item.
screw designationM4 threadhow to read screw specificationthread pitch
Design & Selection
Tightening, Loosening and Breaking Torque
Three different torque values, and a practical basis for how tight is tight enough.
tightening torquebolt torquebreaking torqueloosening torque
Design & Selection
볼트는 얼마나 깊이 물려야 하나 — 물림길이와 탭 깊이
모재 재질별 적정 체결 깊이, 나사산 하중 분배의 원리, 막힌구멍 드릴 깊이 계산.
물림길이체결 깊이탭 깊이볼트 체결깊이
Design & Selection
십자 드라이버 비트 호환표 — #0부터 #4까지
나사 머리가 뭉개지는 원인의 대부분은 비트 규격 불일치. 호칭경별 맞는 비트 고르기.
드라이버 비트십자 비트 규격PH2비트 호환표
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