Inch Coarse Thread Inserts,UNC and UNF Inserts Specification

Product Detail

Wire thread inserts Overview

Wire thread inserts are especially designed to produce strong threads in weaker materials and carry out fast and efficient repair of damaged threads

When screw thread coils installed into tapped holes, screw thread inserts provide permanent conventional 60° internal screw threads that accommodate any standard bolt or screw.

Wire thread inserts can be used to strengthen threads, giving applications a longer life. Each insert sharing the load over the entire bolt and hole, improving holding or pull out resistance. With insert installed, a more even distribution of load and stress can be achieved.

Inserts Materials:

Stainless steel grade 304 (AS7245) austenitic corrosion resistant steel.

Stainless steel grade 316 (AISI 316) austenitic corrosion resistant steel.

Thread Inserts Specification- Inch

D= Nominal thread diameter 

P= Thread pitch 

W = Number of threads prior to installation 

Do = Outside diameter of thread insert prior to installation

Db = Bottom hole diameter

DXP	k×D	L(mm)	W(˜)	Do Min-Max(mm)	Db(mm)
4-40	1d	2.9	3.2	3.66-4.04	3
	1.5d	4.3	5.1
	2d	5.8	7.2
5-40	1d	3.2	3.7	4.01-4.39	3.4
	1.5d	4.8	5.9
	2d	6.4	8.2
6-32	1d	3.5	2.8	4.52-4.90	3.7
	1.5d	5.3	4.8
	2d	7	6.8
8-32	1d	4.2	4	5.20-5.56	4.4
	1.5d	6.25	6
	2d	8.3	8.7
10-24	1d	4.8	3.3	6.19-6.58	5.1
	1.5d	7.2	5.4
	2d	9.6	7.5
12-24	1d	5.5	4	6.86-7.24	5.8
	1.5d	8.2	6.3
	2d	11	8.8
1/4"-20	1d	6.4	3.9	7.86-8.38	6.7
	1.5d	9.5	6.2
	2d	12.7	8.6
3/8"-16	1d	9.5	4.8	11.48-11.99	9.9
	1.5d	14.3	7.7
	2d	19.1	10.6
7/16"-14	1d	11.1	4.9	13.36-13.99	11.6
	1.5d	16.7	7.9
	2d	22.2	10.7
1/2"-13	1d	12.7	5.2	15.16-15.8	13.1
	1.5d	19.1	8.3
	2d	25.4	11.4
5/8"-11	1d	15.9	5.7	18.84-19.48	16.4
	1.5d	23.8	9
	2d	31.8	12.3
3/4"-10	1d	19.1	6.3	22.36-23.00	19.6
	1.5d	28.6	9.9
	2d	38.1	13.5
1"-8	1d	25.4	6.8	29.62-30.38	26.1
	1.5d	38.1	10.6
	2d	50.8	15.4
8-36	1d	4.2	4.5	5.18-5.68	4.3
	1.5d	6.3	7.2
	2d	8.3	9.7
10-32	1d	4.83	4.1	5.99-6.50	5
	1.5d	7.24	6.9
	2d	9.6	10
1/4"-28	1d	6.35	5	7.77-8.28	6.6
	1.5d	9.5	8.6
	2d	12.7	11.8
5/16"-24	1d	7.9	5.9	9.65-10.16	8.2
	1.5d	11.9	9.4
	2d	15.9	12.8
3/8"-24	1d	9.5	7.3	11.37-11.88	9.8
	1.5d	14.3	11.5
	2d	19.1	15.6
7/16"-20	1d	11.1	7	13.3-13.7	11.4
	1.5d	16.7	11.1
	2d	22.2	15
1/2"-20	1d	12.7	7.9	15.03-15.67	13
	1.5d	19.1	12.8
	2d	25.4	17.3
9/16"-18	1d	14.3	7.9	16.91-17.55	14.6
	1.5d	21.5	12
	2d	28.6	16
5/8"-18	1d	15.9	9.4	18.61-19.25	16.2
	1.5d	23.8	14.5
	2d	31.8	19.7
3/4"-16	1d	19.1	10.1	22.25-22.88	19.4
	1.5d	28.6	15.6
	2d	31.8	21
7/8"-14	1d	22.2	10.3	25.93-26.69	22.6
	1.5d	33.3	15.9
	2d	44.5	21.6
1"-14	1d	25.4	11.8	29.69-30.45	25.9
	1.5d	38.1	18.1
	2d	50.8	24.5
1"-12	1d	25.4	10	29.69-30.45	30

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