NAS1953 Thru NAS1970

NAS Bolts – NAS1953 Thru NAS1970

BOLT, SHEAR, HEXAGON HEAD, 108 KSI SHEAR, LONG THREAD

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BASIC PART NUMBER	THREAD UNJF-3A	A	(5) B REF	(3) C DIA MIN	(11) D DIA BEFORE PLATING OR COATING	(11) D DIA AFTER PLATING OR COATING	H +.015 -.010	J +.015 -.000	(16) K DIA -.01	M -.010	N DIA +.010 -.000	(4) P DIA +.010 -.000	(5) T REF	U REF
NAS1953	.1900-32	.376 .367	.43	.335	.1885 .1881	.1895 .1885	.110	.073	.19	.163	.046	.070	.338	.016
nas1954	.2500-28	.439 .430	.51	.398	.2485 .2481	.2495 .2485	.125	.083	.25	.178	.046	.076	.425	.018
nas1955	.3125-24	.502 .492	.58	.460	.3110 .3106	.3120 .3110	.156	.104	.31	.181	.070	.076	.469	.021
NAS1956	.3750-24	.564 .553	.65	.523	.3735 .3731	.3745 .3735	.188	.125	.38	.197	.070	.106	.578	.021
NAS1957	.4375-20	.690.679	.79	.648	.4360.4356	.4370.4360	.219	.146	.44	.201	.070	.106	.594	.025
NAS1958	.5000-20	.752.741	.87	.710	.4985 .4981	.4995 .4985	.250	.167	.50	.216	.070	.106	.735	.025
NAS1959	.5625-18	.877 .865	1.01	.835	.5605 .5601	.5615 .5605	.251			.218	.070	.141	.840	.028
NAS1960	.6250-18	.940.928	1.09	.898	.6230.6226	.6240.6230	.312			.249	.070	.141	.9025	.028
NAS1962	.7500-16	1.064 1.052	1.23	1.023	.7480 .7476	.7490 .7480	.375			.252	.070	.141	1.041	.031
NAS1964	.8750-14	1.252 1.239	1.44	1.210	.8730 .8726	.8740 .8730	.438			.257	.070	.141	1.184	.036
NAS1966	1.000-12	1.440 1.427	1.66	1.398	.9980 .9976	.9990 .9980	.500			.264	.070	.141	1.309	.042
NAS1968	1.1250-12	1.627 1.614	1.88	1.585 1.1230	1.1221 1.1240	1.1225	.562			.357	.070	.141	1.458	.042
NAS1970	1.2500-12	1.815 1.801	2.10	1.772	1.2480 1.2471	1.2490 1.2475	.625			.389	.070	.141	1.646	.042

BASIC PART NUMBER	DOUBLE SHEAR STRENGTH LBS MIN(15)	TENSILE STRENGTH LBS MIN
NAS1953	6.100	3.910
NAS1954	10.600	6.980
NAS1955	16.600	11.100
NAS1956	23.900	17.100
NAS1957	32.500	23.200
NAS1958	42.400	30.900
NAS1959	53.700	39.200
NAS1960	66.300	49.000
NAS1962	95.400	71.100
NAS1964	129.900	97.100
NAS1966	169.600	126.000
NAS1968	214.700	162.000
NAS1970	265.100	202.000

NOM SIZE	INSPECTION DATA (6) X	INSPECTION DATA (6) Y	INSPECTION DATA (7) Z
.1900	.005	.0045	.0040
.2500	.006	.0045	.0030
.3125	.008	.0045	.0030
.3750	.009	.006	.0025
.4375	.010	.006	.0025
.5000	.011	.006	.0020
.5625	.012	.006	.0020
.6250	.015	.006	.0020
.7500	.018	.009	.0020
.8750	.020	.009	.0020
1.0000	.022	.009	.0020
1.1250	.025	.009	.0020
1.2500	.028	.012	.0020

MATERIAL:

ALLOY STEEL – 4140 (641400) PER MIL-S-5626, 4340 (G43406) PER MIL-S-5000, OR 8740 (G87400) PER
MIL-S-6049.
TTTANIUM ALLOY – 6A1-6V-25n (R56620) PER AMS 4971.
CRES – A-286 (S66286) PER AMS 5731 OR AMS 5737 EXCEPT HEAT TREAT TO 180 KSI MIN.
HEAT TREATMENT: ALLOY STEEL – 180 TO 200 KSI, ULT TENSILE; 108 KSI MIN ULT SHEAR PER MIL-H-6875,
ROCKWELL HARDNESS RC 39 TO 43
TITANIUM ALLOY – 180 KSI MIN ULT TENSILE; 108 KSI MIN ULT SHEAR,
CORROSION RESISTANT STEEL – 180 KSI MIN ULT TENSILE; 108 KSI MIN ULT SHEAR AT ROOM TEMPERATURE.

FINISH:

ALLOY STEEL – CADMIUM PLATE PER QQ-P-416, TYPE II, CLASS 2, BOLTS, ARE NOT TO BEPICKLED. IMMEDIATELY AFTER PLATING
(WITHIN 1 HOUR) BAKE AT 375F +-25F FOR A MINIMUM OF 23 HOURS.
TITANIUM ALLOY – NONE.
CORROSION RESISTANT STEEL – CLEAN AND PASSIVATE PER QQ-P-35.
CORROSION RESISTANT STEEL AND TITANIUM ALLOY – OPTIONAL ALUMINUM COAT PER NAS4006, DESIGNATED BY CODE “P”. INCLUDE A
HALOGEN FREE CETYL ALCOHOL LUBRICANT ON ALL TITANIUM BOLTS.

CODE:

NO LETTER CODE – BOLT, ALLOY STEEL, UNDRILLED.
ADD “D” TO DASH NUMBER FOR DRILLED SHANK.
ADD “H” TO DASH NUMBER FOR DRILLED HEAD.
ADD “P” TO DASH NUMBER ON CRES AND TITANIUM BOLTS FOR ALUMINUM COAT.
ADD “T” IN LIEU OF DASH DESIGNATES TITANIUM ALLOY (FORMER “V” CODE).
ADD “C” IN LIEU OF DASH DESIGNATES CORROSION RESISTANT STEEL.

LENGTH FOR SIZEZ INDICATED

DACR NO.	GRIP ±.010	NAS 1953	NAS 1954	NAS 1955	NAS 1956	NAS 1957	NAS 1958	NAS 1959	NAS 1960	NAS 1962	NAS 1964	NAS 1966	NAS 1968	NAS 1970
1 2 3 4	.062 .125 .188 .150	.400 .463 .526 .588	.487 .550 .613 .675	.531 .594 .657 .719	.640 .703 .766 .828	.656 .719 .782 .844	.797 .860 .923 .985	.9025 .965 1.028 1.090	.964 1.027 1.090 1.152	1.103 1.166 1.229 1.291	1.246 1.309 1.372 1.434	1.371 1.434 1.497 1.559	1.520 1.583 1.646 1.708	1.708 1.771 1.834 1.896
5 6 7 8	.372 .375 .438 .500	.650 .713 .776 .838	.737 .800 .863 .925	.781 .844 .907 .969	.890 .953 1.016 1.078	.906 .969 1.032 1.094	1.047 1.110 1.173 1.235	1.152 1.215 1.278 1.340	1.214 1.277 1.340 1.402	1.353 1.416 1.479 1.541	1.496 1.559 1.622 1.684	1.621 1.684 1.747 1.809	1.770 1.833 1.896 1.958	1.958 2.021 2.084 2.146
9 10 11 12	.562 .625 .688 .750	.900 .963 1.026 1.088	.987 1.050 1.113 1.175	1.031 1.094 1.157 1.129	1.140 1.203 1.266 1.328	1.156 1.219 1.282 1.344	1.297 1.360 1.423 1.485	1.402 1.465 1.528 1.590	1.464 1.527 1.590 1.652	1.603 1.666 1.729 1.791	1.746 1.809 1.872 1.934	1.871 1.934 1.997 2.059	2.020 2.083 2.146 2.208	2.208 2.271 2.334 2.396
13 14 15 16	.812 .875 .938 1.000	1.150 1.213 1.276 1.338	1.237 1.300 1.363 1.425	1.281 1.344 1.407 1.469	1.390 1.453 1.516 1.578	1.406 1.469 1.532 1.594	1.547 1.610 1.673 1.735	1.652 1.715 1.778 1.840	1.714 1.777 1.840 1.902	1.853 1.916 1.979 2.041	1.996 2.059 2.122 2.184	2.121 2.184 2.247 2.309	2.270 2.333 2.396 2.458	2.458 2.521 2.584 2.646
17 18 19 20	1.062 1.125 1.188 1.250	1.400 1.463 1.526 1.588	1.487 1.550 1.613 1.675	1.531 1.594 1.657 1.719	1.640 1.703 1.766 1.828	1.656 1.719 1.782 1.844	1.797 1.860 1.923 1.985	1.902 1.965 2.028 2.090	1.964 2.027 2.090 2.152	2.103 2.166 2.229 2.291	2.246 2.309 2.372 2.434	3.371 2.434 2.497 2.559	2.520 2.583 2.646 2.708	2.708 2.771 2.834 2.896
21 22 23 24	1.312 1.375 1.438 1.500	1.650 1.713 1.776 1.838	1.737 1.800 1.863 1.925	1.781 1.844 1.907 1.969	1.890 1.953 2.016 2.078	1.906 1.969 2.032 2.094	2.047 2.110 2.173 2.235	2.152 2.215 2.278 2.340	2.214 2.277 2.340 2.402	2.353 2.416 2.479 2.541	2.496 2.559 2.622 2.684	2.621 2.684 2.747 2.809	2.770 2.833 2.896 2.958	2.958 3.021 3.084 3.146
25 26 27 28	7.562 1.625 1.688 1.750	1.900 1.963 2.026 2.088	1.987 2.050 2.113 2.175	2.031 2.094 2.157 2.219	2.140 2.203 2.266 2.328	2.156 2.219 2.282 2.344	2.297 2.360 2.423 2.485	2.402 2.465 2.528 2.590	2.464 2.527 2.590 2.652	2.603 2.666 2.729 2.791	2.746 2.809 2.872 2.934	2.871 2.934 2.997 3.059	3.020 3.083 3.146 3.208	3.208 3.271 3.334 3.396
29 30 31 32	1.812 1.875 1.938 2.000	2.150 2.213 2.276 2.338	2.237 2.300 2.363 2.425	2.281 2.344 2.407 2.469	2.390 2.453 2.516 2.578	2.406 2.469 2.532 2.594	2.547 2.610 2.673 2.735	2.652 2.715 2.778 2.840	2.714 2.777 2.840 2.902	2.853 2.916 2.979 3.041	2.996 3.059 3.122 3.184	3.121 3.184 3.247 3.309	3.270 3.333 3.396 3.458	3.458 3.521 3.584 3.646
34 36 38 40	2.125 2.250 2.375 2.500	2.463 2.588 2.713 2.838	2.550 2.675 2.800 2.925	2.594 2.719 2.844 2.969	2.703 2.828 2.953 3.078	2.719 2.844 2.969 3.094	2.860 2.985 3.110 3.235	2.965 3.090 3.215 3.340	3.027 3.152 3.277 3.402	3.166 3.291 3.416 3.541	3.309 3.434 3.559 3.684	3.434 3.559 3.684 3.809	3.583 3.708 3.833 3.958	3.771 3.896 4.021 4.146
42 44 46 48	2.625 2.750 2.875 3.000	2.963 3.088 3.213 3.338	3.050 3.175 3.300 3.425	3.094 3.219 3.344 3.469	3.203 3.328 3.453 3.578	3.219 3.344 3.469 3.594	3.360 3.485 3.610 3.735	3.465 3.590 3.715 3.480	3.527 3.652 3.777 3.902	3.666 3.791 3.916 4.041	3.809 3.934 4.059 4.184	3.934 4.059 4.184 4.309	4.083 4.208 4.333 4.458	4.271 4.396 4.521 4.646
50 52 54 56	3.125 3.250 3.375 3.500	3.463 3.588 3.713 3.838	3.550 3.675 3.800 3.925	3.594 3.719 3.844 3.969	3.703 3.828 3.953 4.078	3.719 3.844 3.969 4.094	3.860 3.985 4.110 4.235	3.965 4.090 4.215 4.340	4.027 4.152 4.277 4.402	4.166 4.291 4.416 4.541	4.309 4.434 4.559 4.684	4.434 4.559 4.684 4.809	4.583 4.708 4.833 4.958	4.771 4.896 5.021 5.146
58 60 62 64	3.625 3.750 3.875 4.000	3.963 4.088 4.213 4.388	4.050 4.175 4.300 4.425	4.094 4.219 4.344 4.469	4.203 4.328 4.453 4.578	4.219 4.344 4.469 4.594	4.360 4.485 4.610 4.735	4.465 4.590 4.715 4.840	4.527 4.652 4.777 4.902	4.666 4.791 4.916 5.041	4.809 4.934 5.059 5.184	4.934 5.059 5.184 5.309	5.083 5.208 5.333 5.458	5.271 5.396 5.521 5.646
66 68 70 72	4.125 4.250 4.375 4.500	4.463 4.588 4.713 4.838	4.550 4.675 4.800 4.925	4.594 4.719 4.844 4.969	4.703 4.828 4.953 5.075	4.719 4.844 4.969 5.094	4.860 4.985 5.110 5.235	4.965 5.090 5.215 5.340	5.166 5.152 5.277 5.402	5.166 5.291 5.416 5.541	5.309 5.434 5.559 5.684	5.434 5.559 5.684 5.809	5.583 5.708 5.833 5.958	5.771 5.896 6.021 6.146
74 76 78 80	4.625 4.750 4.875 5.000	4.963 5.088 5.213 5.338	5.050 5.175 5.300 5.425	5.094 5.219 5.344 5.469	5.203 5.328 5.453 5.578	5.219 5.344 5.469 5.594	5.360 5.485 5.610 5.735	5.465 5.590 5.715 5.840	5.527 5.652 5.777 5.902	5.666 5.791 5.916 6.041	5.809 5.934 6.059 6.184	5.934 6.059 6.184 6.309	6.083 6.208 6.333 6.458	6.271 6.396 6.521 6.646
82 84 86 88	5.125 5.250 5.375 5.500	5.463 5.588 5.713 5.838	5.550 5.675 5.800 5.925	5.594 5.719 5.844 5.969	5.703 5.828 5.953 6.078	5.719 5.844 5.969 6.094	5.860 5.985 6.110 6.235	5.965 6.090 6.215 6.340	6.027 6.152 6.277 6.402	6.166 6.291 6.416 6.541	6.309 6.434 6.559 6.684	6.434 6.559 6.684 6.809	6.583 6.708 6.833 6.958	6.771 6.896 7.021 7.146
90 92 94 96	5.625 5.750 5.875 6.000	5.963 6.088 6.213 6.338	6.050 6.175 6.300 6.425	6.094 6.219 6.344 6.469	6.203 6.328 6.453 6.578	6.219 6.344 6.469 6.594	6.360 6.485 6.610 6.735	6.465 6.590 6.715 6.840	6.527 6.652 6.777 6.902	6.666 6.791 6.916 7.041	6.809 6.934 7.059 7.184	6.934 7.059 7.184 7.309	7.083 7.208 7.333 7.458	7.271 7.396 7.521 7.646

RESTRICTED USE: FOR REPAIR WORK ONLY.

.0156 and 0.312 OVERSIZE SHANK FOR REPLACEMENT OF BOLTS SHOWN ON SHEET 1.
HEAD MARKING: SAME AS SHOWN ON SHEET 1
PLUS IDENTIFICATION FOR OVERSIZE, AS APPLICABLE,
TO BE INCLUDED IN SECOND SECTOR,
IDENTIFY .0456 OVERSIZE BY “X
IDENTIFY .0312 OVERSIZE BY “Y”

0.156 OVERSIZE

BASIC PART NUMBER	D DIA BEFORE PLATING OR COATING	D DIA AFTER PLATING OR COATING
NAS1953-(*)X	.2016 .2012	.2026 .2016
NAS1954-(*)X	.2641 .22637	.2651 .2641
NAS1955-(*)X	.3266 .3262	.3276 .3266
NAS1956-(*)X	.3891 .3887	.3901 .3891
NAS1957-(*)X	.4516 .4512	.4526 .4516
NAS1958-(*)X	.5141 .5137	.5151 .5141
NAS1959-(*)X	.5761 .5757	.5771 .5761
NAS1960-(*)X	.6386 .6382	.6396 .6386
NAS1962-(*)X	.7636 .7632	.7646 .7636
NAS1964-(*)X	.8886 .8882	.8896 .8886
NAS1966-(*)X	1.0136 1.0132	1.0146 1.0136
NAS1968-(*)X	1.1386 1.1377	1.1396 1.1381
NAS1970-(*)X	1.2636 1.2627	1.2646 1.2631

.0312 OVERSIZE

BASIC PART NUMBER	D DIA BEFORE PLATING OR COATING	D DIA AFTER PLATING OR COATING
NAS1953-(*)Y	.2172 .2168	.2182 .2172
NAS1954-(*)Y	.2797 .2793	.2807 .2797
NAS1955-(*)Y	.3422 .3418	.3432 .3422
NAS1956-(*)Y	.4047 .4043	.4057 .4047
NAS1957-(*)Y	.4672 .4668	.4682 .4672
NAS1958-(*)Y	.5297 .5293	.5307 .5297
NAS1960-(*)Y	.6542 .6538	.6552 .6542
NAS1962-(*)Y	.7792 .7788	.7802 .7792
NAS1964-(*)Y	.9042 .9038	.9052 .9042
NAS1966-(*)Y	1.0292 1.0288	1.0302 1.0292
NAS1968-(*)Y	1.1542 1.1533	1.1552 1.1537
NAS1070-(*)Y	1.2792 1.2783	1.2802 1.2787

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