Short - Tail Bolts,

The shor-tail design shallow thread and large root radius, eliminate the gap between collar wall and bolt, provide proven performance with high and consistent clamp load , ensure efficiency on the manufacture floor and enlarge the life-time of tool. The short-tail bolt provides superior strength and reliability , offering best fatigue strength and ultimate viberation resistance.

5 times the fatigue strength of conventional nuts and bolts
Fast and easy to install, minimum noise
Reuseable
Special cutting tools is required to disassemble

Diameter:12mm、16mm、20mm、22mm
Variety of Materials: Steel, Stainless steel , Aluminum alloy
Types: Dome head, Large head,90° countersunk head,Panhead,Eye-bolt
Grade:8.8 Grade、10.9Grade

Basic Dimension

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Table lists

Diameter	d		LMDY		LMDM		LMOP		LMOC		L3
	d		D	K	D	K	D	K	D	K	L3
	min	max	min	min	min	min	min	min	min	min	min	max
12	12.5	13.1	23	7.5	24.1	8.9	23	6	23	6.3	10.8	11.9
16	15.7	16.3	26.9	9.5	32.2	11.4	26.9	7.5	26.9	7.9	10.8	11.9
20	19.7	20.3	32.9	11.5	35	15	32.9	9.1	32.9	9.5	13.4	14.8
22	21.9	22.6	38.5	13.5	42.2	16.5	38.5	10.3	38.5	11.1	15.2	16.6
24	23.9	24.7	42	14.5	44	17.7	42	11	42	12	16.7	18.2
25	25.1	26	44.4	15	---	---	44.4	11.9	44.8	12.7	17.5	19.1
28	27.9	29..2	50.3	17	---	---	----	-	-	-	19.8	21.5
Diameter	d				LMDH						L3
Diameter	min		max		d1	d2	D	h	h1	R	min	max
12	12.5		13.1		14	10	22	28	8	6	10.8	11.9
16	15.7		16.3		16	12	30	35	10	8	10.8	11.9
20	19.7		20.3		20	16	38	42	12	10	13.4	14.8

Basic Dimension

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Table lists

Type	Diameter	d1		d2		d3		L		H
Type	Diameter	min	max	min	max	min	max	min	max	min	max
LMDTF	12	12.8	13.2	19.1	19.4	25.8	27.2	18.4	19	2.4	3
	16	16.1	16.5	23.7	24	32	34	23.1	23.7	3	3.7
	20	20	20.6	30.2	30.6	40.2	41.8	28.9	29.7	3.9	4.5
	22	22.4	23	33.2	33.6	45.1	47.3	32.4	33.1	4.5	5.3
	24	24.1	24.7	35.5	36	48.3	50.7	34.7	35.3	4.8	5.7
	25	25.7	26.3	37.9	38.4	51.6	54.1	37	37.9	5.1	6
	28	28.9	29.5	42.7	43.3	58	60.8	42	42.7	5.8	6.8

Mechanica Properties

Table lists

Diameter	KN Shear	KN Press	KN Tensile
12	≥64	≥54	≥75
16	≥100	≥85	≥120
20	≥144	≥126	≥178
22	≥193	≥175	≥246
24	≥223	≥208	≥268
25	≥251	≥229	≥232
28	≥309	≥260	≥369

Grip Range

Table lists

Type	Grip Range		Length of Bolts
	Grip Range		d=12		d=16		d=20		d=22		d=24		d=25		d=28
	min	max	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8	L2+ 1.5 - 0.8	L1+ 1.5 - 0.8
5	2	12	1	31.2	1	37	1	42.9	1	48	1	50	1	53.6	1	58.4
10	5	15	4	34.2	4	40	4	45.9	4	51	4	53	4	56.6	4	61.4
15	10	20	9	39.2	9	45	9	50.9	9	56	9	58	9	61.6	9	66.4
20	15	25	14	44.2	14	50	14	55.9	14	61	14	63	14	66.6	14	71.4
25	20	30	19	49.2	19	55	19	60.9	19	66	19	68	19	71.6	19	76.4
30	25	35	24	54.2	24	60	24	65.9	24	71	24	73	24	76.6	24	81.4
35	30	40	29	59.2	29	65	29	70.9	29	76	29	78	29	81.6	29	86.4
40	35	45	34	64.2	34	70	34	75.9	34	81	34	83	34	86.6	34	91.4
45	40	50	39	69.2	39	75	39	80.9	39	86	39	88	39	91.6	39	96.4
50	45	55	44	74.2	44	80	44	85.9	44	91	44	93	44	96.6	44	101.4
55	50	60	49	79.2	49	85	49	90.9	49	96	49	98	49	101.6	49	106.4
60	55	65	54	84.2	54	90	54	95.9	54	101	54	103	54	106.6	54	111.4
65	60	70	59	89.2	59	95	59	100.9	59	105	59	108	59	111.6	59	116.4
70	65	75	64	94.2	64	100	64	105.9	64	110	64	113	64	116.6	64	121.4
75	70	80	69	99.2	69	105	69	110.9	69	115	69	118	69	121.6	69	126.4
80	75	85	74	104.2	74	110	74	115.9	74	120	74	123	74	126.6	74	131.4
90	85	95	--	--	84	120	84	125.9	84	130	84	133	84	136.6	84	141.4
100	95	105	--	--	94	130	94	135.9	94	140	94	143	94	146.6	94	151.4
110	105	115	--	--	104	140	104	145.9	104	150	104	153	104	156.6	104	161.4

After Installation

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Table lists

Diameter	L1	L2	L3	D
Diameter	min	max	min	max
12	11.1	24.1	13.9	18.4
16	11.1	25.4	17.4	23
20	14	26.7	21.8	28.8
22	17.7	30	24.4	32.2
24	19.6	31	27.5	34.8
25	20.8	32.8	29.1	36.8
28	23.4	37	32.7	41.4

Hole Data

Table lists

Nominal Dia	12	16	20	22	24	25	28
Hole Dia	12.7-13.5	15.9-17.5	19.1-21	22.3-24	23.9-26	25.4-27	28.6-30

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PRODUCTS

SHORT - TAIL BOLTS

Basic Dimension

Basic Dimension

Mechanica Properties

Grip Range

After Installation

Hole Data