Grip Length

NAS 517 TOTAL LENGTH AND GRIP LENGTH DIMENSIONS

DIA DASH NO.		#2	#3	#4	#5	#6	#7	#8
LENGTH	GRIP	TOTAL LENGTH + 0.30/- 0.15
DASH	LENGTH	.1640-32	.1900-32	.2500-28	.3125-24	.3750-24	.4375-20	.5000-20
NUMBER	+/- .015	(#8-32)	(#10-32)	(1/4-28)	(5/16-24)	(3/8-24)	(7/16-20)	(1/2-20)
00	0.1130	0.343	0.343
0	0.1130	0.406	0.406	0.469	0.531
1	0.1130	0.469	0.469	0.531	0.594	0.688	0.781
2	0.1250	0.531	0.531	0.594	0.656	0.750	0.844	0.875
3	0.1880	0.594	0.594	0.656	0.719	0.812	0.906	0.938
4	0.2500	0.656	0.656	0.719	0.781	0.875	0.969	1.000
5	0.3120	0.719	0.719	0.781	0.844	0.938	1.031	1.062
6	0.3750	0.781	0.781	0.844	0.906	1.000	1.093	1.125
7	0.4380	0.844	0.844	0.906	0.969	1.062	1.156	1.188
8	0.5000	0.906	0.906	0.969	1.031	1.125	1.219	1.250
9	0.5620	0.969	0.969	1.031	1.093	1.188	1.281	1.312
10	0.6250	1.031	1.031	1.093	1.156	1.250	1.343	1.375
11	0.6880	1.093	1.093	1.156	1.219	1.312	1.406	1.438
12	0.7500	1.156	1.156	1.219	1.281	1.375	1.468	1.500
13	0.8120	1.219	1.219	1.281	1.343	1.438	1.531	1.562
14	0.8750	1.281	1.281	1.343	1.406	1.500	1.594	1.625
15	0.9380	1.343	1.343	1.406	1.468	1.562	1.656	1.688
16	1.0000	1.406	1.406	1.468	1.531	1.625	1.719	1.750
17	1.0620	1.468	1.468	1.531	1.594	1.688	1.781	1.812
18	1.1250	1.531	1.531	1.594	1.656	1.750	1.844	1.875
19	1.1880	1.594	1.594	1.656	1.719	1.812	1.906	1.938
20	1.2500	1.656	1.656	1.719	1.781	1.875	1.969	2.000
21	1.3120	1.719	1.719	1.781	1.844	1.938	2.031	2.062
22	1.3750	1.781	1.781	1.844	1.906	1.000	2.093	2.125
23	1.4380	1.844	1.844	1.906	1.969	2.062	2.156	2.188
24	1.5000	1.906	1.906	1.969	2.031	2.125	2.219	2.250
25	1.5620	1.969	1.969	2.031	2.093	1.188	2.281	2.312
26	1.6250	2.031	2.031	2.093	2.156	2.250	2.343	2.375
27	1.6880	2.093	2.093	2.156	2.219	2.312	2.406	2.438
28	1.7500	2.156	2.156	2.219	2.281	2.375	2.468	2.500
29	1.8120	2.219	2.219	2.281	2.343	2.438	2.531	2.562
30	1.8750	2.281	2.281	2.343	2.406	2.500	2.594	2.625
31	1.9380	2.343	2.343	2.406	2.468	2.562	2.656	2.688
32	2.0000	2.406	2.406	2.468	2.531	2.625	2.719	2.750

NOTE 1: SHORT SCREWS LISTED ABOVE THE DOUBLE LINES IN COLUMNS 5, 6, 7, 8 AND 9
SHALL BE THREADED TO WITHIN .030 - .060 OF HEAD TO SHANK INTERSECTION. WHERE
APPLICABLE WE HAVE SPECIFIED THESE SCREWS AS HAVING A GRIP LENGTH OF 0.113.
NOTE 2: BY DEFINITION, NAS 517 SCREWS ARE 100 DEGREES, FLAT HEAD, CROSS RECESS,
ALLOY STEEL. SINCE THESE SCREWS ARE SIX LOBE DRIVE AND MAY HAVE VARIOUS
MATERIAL AND PLATINGS, NAS 517 SPEC WILL ONLY BE USED AS A REFERENCE.