NAS1581
100 DEG. FLUSH REDUCED HEAD BOLT
FIRST
DASH
NO.
-3
NAS1581
THREAD
UNJF-3A
.1900-32
"A" DIA "B" DIA
MAX
MIN
.3047
.2570
"D" DIA
100 DEG. FLUSH REDUCED HEAD BOLT
.1895
.1890
.2495
.2490
.3120
.3115
.3745
.3740
.4370
.4365
.4995
.4990
.5615
.5610
.6240
.6235
MATERIAL : ALLOY STEEL PER NAS498
HEAT TREATMENT : 160,000 - 180, PSI UTS - PER MIL-H-6875
FINISH : Cadmium plating per qq-p-416, TYPE 11 CLASS 2 OR
TYPE 1 CLASS 2
CODE: DASH NUMBER DESIGNATES GRIP & LENGTH (SEE
CHART BELOW)
"W" AFTER DASH NO. DESIGNATES TYPE 1 PLATING.
"D'" AFTER DASH NO. INDICATES DRILLED SHANK.
EXAMPLE:
NAS1204-8, .250 DIA BOLT .500 GRIP TYPE 11 PLATING.
NAS1205-10 .3125 DIA BOLT .625 GRIP TYPE 2 PLATING.
NAS1205-10W .3125 DIA BOLT .625 GRIP TYPE 1 PLATING.
NAS1205-10D .3125 DIA BOLT .625 GRIP DRILLED SHANK
TYPE 11 PLATING.
PLATED UNPLATED
.1895
.1885
.2495
.2485
.3120
.3110
.3745
.3735
.4370
.4360
.4995
.4985
.5615
.5605
.6240
.6230
-4
.2500-28
.3988
.3504
B
A
D
-5
.3125-24
.4787
.4289
-6
.3750-24
.5662
.5149
-7B
.4375-20
.6741
.6047
-8
.5000-20
.7611
.6901
-9
.5625-18
.8449
.7655
-10
.6250-18
.9329
.8518
USE TABLES FOR DIAMETERS AND
GRIP / OVERALL LENGTHS WHEN
ORDERING
GRIP
DASH
NO.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
34
36
38
40
42
44
46
48
LENGTH
±
.015
THREAD
UNJF-3A NAS1581 NAS1581
-3
-4
0.125
0.187
0.250
0.312
0..375
0.438
0.500
0.562
0.625
0.688
0.750
0.812
0.875
0.938
1.000
1.062
1.125
1.188
1.250
1.312
1.375
1.438
1.500
1.562
1.625
1.688
1.750
1.812
1.875
1.938
2.000
2.125
2.250
2.375
2.500
2.625
2.750
2.875
3.000
0.487
0.549
0.613
0.675
0.738
0.801
0.863
0.925
0.988
1.051
1.113
1.175
1.238
1.301
1.363
1.425
1.488
1.551
1.613
1.675
1.738
1.601
1.863
1.925
1.988
2.051
2.113
2.175
2.238
2.301
2.363
2.488
2.613
2.738
2.863
2.988
3.113
3.238
3.363
0.528
0.590
0.653
0.715
0.778
0.841
0.903
0.965
1.028
1.091
1.153
1.215
1.278
1.341
1.403
1.465
1.528
1.391
1.653
1.715
1.778
1.841
1.903
1.965
2.028
2.091
2.153
2.215
2.278
2.341
2.401
2.528
2.653
2.778
2.903
3.028
3.153
3.278
3.403
NAS1581
-5
0.751
0.813
0.876
0.929
1.001
1.061
1.126
1.189
1.251
1.313
1.376
1.439
1.501
1.563
1.626
1.689
1.751
1.813
1.876
1.939
2.001
2.063
2.126
2.189
2.251
2.313
2.376
2.439
2.501
2.626
2.751
2.876
3.001
3.126
3.251
3.376
3.501
NAS1581
-6
0.844
0.906
0.969
1.032
1.094
1.156
1.219
1.282
1.344
1.406
1.496
1.532
1.594
1.656
1.719
1.782
1.844
1.906
1.969
2.032
2.094
2.156
2.219
2.282
2.344
2.406
2.469
2.532
2.594
2.719
2.844
2.969
3.094
3.219
3.344
3.469
3.594
NAS1581 NAS1581
-7
-8
0.925
0.987
1.050
1.113
1.175
1.237
1.300
1.363
1.425
1.487
1.550
1.613
1.675
1.737
1.800
1.863
1.925
1.987
2.050
2.113
2.175
2.237
2.300
2.363
2.425
2.487
2.550
2.613
2.675
2.800
2.925
3.050
3.175
3.300
3.425
3.550
3.675
1.018
1.080
1.143
1.206
1.268
1.330
1.393
1.456
1.518
1.580
1.643
1.706
1.768
1.830
1.893
1.956
2.018
2.080
2.143
2.206
2.268
2.330
2.393
2.456
2.518
2.580
2.643
2.706
2.768
2.893
3.018
3.143
3.268
3.393
3.518
3.643
3.768
NAS1581
-9
NAS1581
-10
1.256
1.319
1.381
1.443
1.506
1.569
1.631
1.693
1.756
1.819
1.881
1.943
2.006
2.069
2.131
2.193
2.256
2.319
2.381
2.443
2.506
2.569
2.631
2.693
2.756
2.819
2.881
3.006
3.131
3.256
3.381
3.506
3.631
3.756
3.001
1.356
1.419
1.491
1.543
1.606
1.669
1.731
1.793
1.856
1.919
1.981
2.043
2.106
2.159
2.211
2.293
2.356
2.419
2.481
2.543
2.606
2.669
2.731
2.793
2.856
2.919
2.981
3.106
3.231
3.356
3.481
3.606
3.731
3.856
3.981
Product information and part numbers shown on these pages are not guaranteed
correct by AVIAQUIP PTY. LTD and are subject to cha nge without notice.
9
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