NAS1581
NAS1581
100 DEG. FLUSH REDUCED HEAD BOLT
100 DEG. FLUSH REDUCED HEAD BOLT
FIRST THREAD "A" DIA "B" DIA
"D" DIA
DASH
NO.
UNJF-3A
MAX
MIN
UNPLATED
PLATED
-3
-4
-5
-6
.1900-32
.3047
.2570
.1895
.1885
.1895
.1890
.2500-28
.3125-24
.3750-24
.3988
.4787
.5662
.3504
.4289
.5149
.2495
.2485
.2495
.2490
B
.3120
.3110
.3120
.3115
A
.3745
.3735
.3745
.3740
D
-7B
-8
.4375-20
.5000-20
.5625-18
.6250-18
.6741
.7611
.8449
.9329
.6047
.6901
.7655
.8518
.4370
.4360
.4370
.4365
MATERIAL : ALLOY STEEL PER NAS498
.4995
.4985
.4995
.4990
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
-9
.5615
.5605
.5615
.5610
CODE: DASH NUMBER DESIGNATES GRIP & LENGTH (SEE
CHART BELOW)
"W" AFTER DASH NO. DESIGNATES TYPE 1 PLATING.
"D'" AFTER DASH NO. INDICATES DRILLED SHANK.
-10
.6240
.6230
.6240
.6235
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.
USE TABLES FOR DIAMETERS AND
GRIP / OVERALL LENGTHS WHEN
ORDERING
GRIP
LENGTH ± .015
DASH
NO.
THREAD
UNJF-3A
NAS1581 NAS1581 NAS1581 NAS1581 NAS1581 NAS1581 NAS1581 NAS1581
-3
-4
-5
-6
-7
-8
-9
-10
2
3
4
0.125
0.187
0.250
0.487
0.549
0.613
0.528
0.590
0.653
0.751
0.844
0.925
1.018
5
6
7
8
0.312
0..375
0.438
0.500
0.675
0.738
0.801
0.863
0.715
0.778
0.841
0.903
0.813
0.876
0.929
1.001
0.906
0.969
1.032
1.094
0.987
1.050
1.113
1.175
1.080
1.143
1.206
1.268
1.256
1.319
1.381
1.356
1.419
1.491
9
10
11
12
0.562
0.625
0.688
0.750
0.925
0.988
1.051
1.113
0.965
1.028
1.091
1.153
1.061
1.126
1.189
1.251
1.156
1.219
1.282
1.344
1.237
1.300
1.363
1.425
1.330
1.393
1.456
1.518
1.443
1.506
1.569
1.631
1.543
1.606
1.669
1.731
13
14
15
16
0.812
0.875
0.938
1.000
1.175
1.238
1.301
1.363
1.215
1.278
1.341
1.403
1.313
1.376
1.439
1.501
1.406
1.496
1.532
1.594
1.487
1.550
1.613
1.675
1.580
1.643
1.706
1.768
1.693
1.756
1.819
1.881
1.793
1.856
1.919
1.981
17
18
19
20
1.062
1.125
1.188
1.250
1.425
1.488
1.551
1.613
1.465
1.528
1.391
1.653
1.563
1.626
1.689
1.751
1.656
1.719
1.782
1.844
1.737
1.800
1.863
1.925
1.830
1.893
1.956
2.018
1.943
2.006
2.069
2.131
2.043
2.106
2.159
2.211
21
22
23
24
1.312
1.375
1.438
1.500
1.675
1.738
1.601
1.863
1.715
1.778
1.841
1.903
1.813
1.876
1.939
2.001
1.906
1.969
2.032
2.094
1.987
2.050
2.113
2.175
2.080
2.143
2.206
2.268
2.193
2.256
2.319
2.381
2.293
2.356
2.419
2.481
25
26
27
28
1.562
1.625
1.688
1.750
1.925
1.988
2.051
2.113
1.965
2.028
2.091
2.153
2.063
2.126
2.189
2.251
2.156
2.219
2.282
2.344
2.237
2.300
2.363
2.425
2.330
2.393
2.456
2.518
2.443
2.506
2.569
2.631
2.543
2.606
2.669
2.731
29
30
31
32
1.812
1.875
1.938
2.000
2.175
2.238
2.301
2.363
2.215
2.278
2.341
2.401
2.313
2.376
2.439
2.501
2.406
2.469
2.532
2.594
2.487
2.550
2.613
2.675
2.580
2.643
2.706
2.768
2.693
2.756
2.819
2.881
2.793
2.856
2.919
2.981
34
36
38
40
2.125
2.250
2.375
2.500
2.488
2.613
2.738
2.863
2.528
2.653
2.778
2.903
2.626
2.751
2.876
3.001
2.719
2.844
2.969
3.094
2.800
2.925
3.050
3.175
2.893
3.018
3.143
3.268
3.006
3.131
3.256
3.381
3.106
3.231
3.356
3.481
42
44
46
48
2.625
2.750
2.875
3.000
2.988
3.113
3.238
3.363
3.028
3.153
3.278
3.403
3.126
3.251
3.376
3.501
3.219
3.344
3.469
3.594
3.300
3.425
3.550
3.675
3.393
3.518
3.643
3.768
3.506
3.631
3.756
3.001
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 change without notice.
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