ASTM F959

ASTM F 959 - 2005 (a)

Compressible-Washer-Type Diredt Tension

Indicators for Use with Structual Fasteners

For thread diameter

d	min
d	max
d₁	Protrusion Tangential Diameter (max)
D₂	min【325】
	max【325】
	min【490】
	max【490】
n	Number of Protrusions 【325】
n	Number of Protrusions 【490】
h	min【325】
h	min【490】
H	max【325】
H	max【490】

0.523	0.654	0.786	0.917	1.048	1.179	1.311	1.442	1.573
0.527	0.658	0.790	0.921	1.052	1.183	1.315	1.446	1.577
0.788	0.956	1.125	1.294	1.463	1.631	1.800	1.969	2.138
1.167	1.355	1.605	1.855	1.980	2.230	2.480	2.730	2.980
1.187	1.375	1.625	1.875	2.000	2.250	2.500	2.750	3.000
1.355	1.605	1.730	1.980	2.230	2.480	2.730	2.980	3.230
1.375	1.625	1.750	2.000	2.250	2.500	2.750	3.000	3.250
4	4	5	5	6	6	7	7	8
5	5	6	6	7	7	8	8	9
0.104	0.126	0.126	0.142	0.158	0.158	0.158	0.158	0.158
0.104	0.126	0.142	0.158	0.158	0.158	0.158	0.158	0.158
0.180	0.220	0.230	0.240	0.270	0.270	0.270	0.270	0.270
0.180	0.220	0.240	0.260	0.270	0.280	0.280	0.280	0.280

①,【325】Type 325——for use with Specification A 325 bolts.
②,【490】Type 490——for use with Specification A 490 bolts.

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