4-40 x 1D UNC Helicoil Insert (Pack 50)
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4-40 x 1D UNC Helicoil Insert (Pack 50)

£12.53   (Exc. 20% VAT)  

Part Number:  WTUNC4x1D-A
Thread Form:  UNC (Unified National Coarse)
Diameter:  No.4
Length:  1 x Dia (1D)
Type:  Free Running Inserts _ Box of 50
Thread Pitch:  40 TPI

Availability:  

In stock, immediate despatch  

In stock, immediate despatch


Diameter Pitch
(mm)
Thread Form Length Style Material
4 40 UNC (Unified National Coarse) 1.0D Free Running - Tanged Stainless Steel


Length explained 
The length of a wire thread insert is calculated as a multiple of the diameter:
e.g. M8 x 1.5D the insert length = 12mm;
e.g. M8 x 2D the insert length = 16mm 

About our Thread Repair Inserts
The most effective and universally accepted method of thread repair.
Quickly and permanently restore stripped, worn or damaged threads to their original size and condition.
Work in any type of material.
Stainless steel inserts eliminate thread wear, corrosion, galling and rust.

Note: When measuring a thread repair insert it must be measured IN the hole. Measuring outside the hole will not give an indication of the overall length as the insert is not in its compressed form. 

 

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