BOLT, 100º FLUSH REDUCED HEAD
| FIRST DASH NO. | THREAD UNJF-3A | A DIA MAX | B DIA MIN | BFORE PLATE | PLATED | UN- PLATED | E MAX(b) | H REF(b) | M GAGE PROT(c) | R RAD | T | U REF(f) | V GAGF DIA | Y TIR(d) | Z TIR(e) | TENSILE STRENGTH LBS. MIN(i) |
| -3 | .1900-32 | .3047 | .2578 | 1887 .1881 |
.1895 .1885 |
.1895 .1890 |
.015 | .049 | .0250 .0210 |
.020 .010 |
.363 | .050 | .2441 .2439 |
.005 | .0040 | 2,000 |
| -4 | .2500-28 | .3988 | .3504 | .2487 .2481 |
.2495 .2485 |
.2495 .2490 |
.015 | .063 | .0278 .0232 |
.020 .010 |
.403 | .050 | .3315 .3313 |
.006 | .0030 | 3,700 |
| -5 | .3125-24 | .4787 | .4289 | .3112 .3106 |
.3120 .3110 |
.3120 .3115 |
.015 | .070 | .0305 .0255 |
.025 .010 |
.501 | .060 | .4047 .4045 |
.007 | .0030 | 5,000 |
| -6 | .3750-24 | .5662 | .5149 | .3737 .3181 |
.3745 .3735 |
.3745 .3740 |
.015 | .081 | .0333 .0277 |
.030 .015 |
.594 | .060 | .4854 .4852 |
.008 | .0025 | 7,200 |
| -7 (j) -7B | 4375-20 | .6741 | .6047 | .4362 .4356 |
.4370 .4360 |
.4370 .4365 |
.022 | .100 | .0430 .0370 |
.030 .015 |
.675 | .080 | .5697 .5695 |
.009 | .0025 | 10,000 9,000 |
| -8 | .5000-20 | .7611 | .6901 | .4987 .4981 |
.4995 .4985 |
.4995 .4990 |
.022 | .111 | .0458 .0392 |
.030 .015 |
.768 | .080 | .6499 .6497 |
.010 | .0020 | 13,500 |
| -9 | .5625-18 | .8449 | .7655 | .5607 .5601 |
.5615 .5605 |
.5615 .6510 |
.025 | .119 | .0515 .0445 |
.030 .015 |
.881 | .090 | .7200 .7198 |
.010 | .0020 | 17,000 |
| -10 | .6250-18 | .9329 | .8518 | .6232 .6226 |
.6240 .6230 |
.6240 .6235 |
.025 | .130 | .0543 .0467 |
.030 .015 |
.981 | .090 | .8011 .8009 |
.010 | .0020 | 21,000 |
| FIRST DASH NO. | RECESS NO. | J MAX | W DIA MAX | GAGE PENETRATION | Recess Torque In. Lbs. Min | |
| MIN | MAX | |||||
| -3 | 8 | .078 | .215 | .0480 | .0595 | 37 |
| -4 | 10 | .090 | .248 | .0560 | .0685 | 50 |
| -5 | 1/4 | .118 | .325 | .0750 | .0890 | 125 |
| -6 | 5/16 | .122 | .357 | .0700 | .0860 | 250 |
| -7 | 3/8 | .145 | .427 | .0850 | .1030 | 430 |
| -8 | 7/16 | .169 | .498 | .1005 | .1205 | 760 |
| -9 | 1/2 | .193 | .568 | .1155 | .1375 | 1060 |
| -10 | 9/16 | .217 | .638 | .1305 | .1545 | 1140 |
| FIRST DASH NO. | RECE- SS NO. | J | K REF | W REF | Recess Torque In. Lbs. Min | |
| MIN | MAX | |||||
| -3 | 2 | .036 | .039 | .224 | .100 | 37 |
| -4 | 3 | .042 | .045 | .300 | .110 | 50 |
| -5 | 4 | .046 | .049 | .394 | .134 | 125 |
| -6 | 5 | .061 | .064 | .484 | .160 | 250 |
| -7 | 6 | .066 | .070 | .571 | .198 | 430 |
| -8 | 7 | .082 | .086 | .660 | .224 | 760 |
| -9 | 8 | .094 | .098 | .731 | .256 | 1060 |
| -10 | 9 | .100 | .104 | .819 | .300 | 1440 |
MATERIAL:
ALLOY STEEL – 4140 PER MIL-S-5626, 4340 PER MIL-S-5000 OR 8740 PER MIL-S-6049. 6AL-4V TITANIUM ALLOY PER AMS4928 OR
AMS4967. A-286 CRES PER AMS5731, AMS7532 OR AMS5737 (SEE “CODE”).
HEAT TREAT:
ALLOY STEEL: 160,000 – 180,000 PSI MINIMUM TENSILE STRENGTH.
A-286 CRES: 160,000 – 180,000 PSI MINIMUM TENSILE STRENGTH.
6AL-4V TL: 160,000 – 180,000 PSI MINIMUM TENSILE STRENGTH.
FINISH:
PASSIVATE PER QQ-P-35 OR CADMIUM PLATE PER QQ-P 416, TYPE II, CLASS 2 OR
TYPE II, CLASS 3 (SEE “CODE”).
CODE:
FIRST DASH NUMBER INDICATES NOMINAL DIAMETER IN 16THS. SECOND DASH NUMBER INDICATES GRIP LENGTH IN .0625 INCH
INCREMEMNTS. 6
MATERIAL: CODE LETTER “A” FOLLOWING BASIC PART NUMBER INDICATES ALLOY STEEL. CODE LETTER “C” FOLLOWING
BASIC PART NUMBER INDICATES A-286 CRES. CODE LETTER “V” FOLLOWING BASIC PART NUMBER INDICATES 6AL-4V TITANIUM.
FINISH: ALLOY STEEL: TYPE II, CLASS 2, 6 CADMIUM PLATE.
A-286 CRES: NO CODE LETTER FOLLOWING SECOND NUMBER INDICATES PASSIVATE.
CODE LETTER “P” FOLLOWING SECOND DASH NUMBER INDICATES TYPE II, CLASS 2, 6 CADMIUM PLATE.
6AL-4V TL: NO FINISH. 6
RECESS: CODE LETTER “H” FOLLOWING FIRST DASH NUMBER INDICATES HI-TORQUE ® RECESS PER MS33750 CODE
LETTER “R” FOLLOWING FIRST DASH NUMBER INDICATES TORQ-SET ® RECESS PER MS14191 FOR
SIZES 3, 4 AND 5.
CODE LETTER “T” FOLLOWING FIRST DASH NUMBER INDICATES TORQ-SET ® RECESS PER MS33781 OVERSIZE: CODE LETTER “X” FOLLOWING
SECOND DASH NUMBER INDICATES REPLACEMENT BOLT.