KFN542

K-FAST® SYSTEMS ENGINEERING
COMMITTEE

K-FAST IS A REGISTERED TRADEMARK OF LICENSEES:

KAYNAR, A MICRODOT COMPANY DEUTSCH FASTENER CORPORATION VOI-SHAN / A DIVISION OF
VSI CORP.

SPS TECHNOLOGIES INCORPORATED SIMMONDS S.A., FRANCE

K.E.C.

K-FAST® ENGINEERING COMMITTEE

TITLE

PART NUMBER

800 SOUTH STATE COLLEGE BLVD.

6 POINT, CAPTIVE WASHER

KFN542 – (*)

FULLERTON, CALIFORNIA 92631

K-FAST PART NO

THREADS PER MIL-S-8879

A

MAX

C

MIN

D

H

MAX

M

P

MAX

W

AXIAL TENSILE STRENGTH LBS MIN

APPROX WEIGHT

LBS/100

KFN542-

06

.1380-32UNJC-3B

.320

.207

.176

.171

.200

.097

.087

.181

.189

.181

1,670

.10

05…

.1640-36UNJF-3B

.340

.242

.202

.197

.220

.097

.087

.207

.220

.212

2,800

.17

08

.1640-32UNJC-3B

.340

.242

.202

.197

.240

.097

.087

.207

.220

.212

2,800

.17

3

.1900-32UNJF-3B

.363

.277

.228

.223

.243

.097

.087

.233

.251

.243

3,470

.24

4

.2500-28UNJF-3B

.460

.348

.288

.283

.280

.097

.087

.293

.313

.306

6,200

.47

5

.3125-24UNJF-3B

.560

.419

.352

.347

.340

.097

.087

.357

.376

.367

9,800

.78

6

.3750-24UNJF-3B

.660

.491

.417

.412

.355

.097

.087

.422

.439

.430

13,000

.93

7

.4375-20UNJF-3B

.760

.561

.484

.479

.400

.097

.087

.489

.502

.492

18,000

1.44

8

.5000-20UNJF-3B

.860

.631

.551

.546

.430

.097

.087

.556

.564

.553

24,000

1.94

9

.5625-18UNJF-3B

1.005

.700

.640

.635

.530

.115

.105

.645

.627

.616

33,000

3.08

10

.6250-18UNJF-3B

1.100

.846

.710

.705

.575

.115

.105

.715

.752

.741

43,000

5.00

12

.7500-16UNJF-3B

1.310

.987

.845

.840

.670

.125

.115

.850

.877

.865

61,000

7.88

14

.8750-14UNJF-3B

1.480

1.130

.985

.980

.770

.145

.135

.990

1.002

.990

73,900

11.45

1612

1.0000-12UNJF-3B

1.690

1.271

1.125

1.120

.870

.165

.155

1.130

1.127

1.115

85,700

16.00

K-FAST PART NO

THREADS PER MIL-S-8879

A

MAX

C

MIN

D

H

MAX

M

P

MAX

W

AXIAL TENSILE STRENGTH LBS MIN

APPROX WEIGHT

LBS/100

KFN542-

06

.1380-32UNJC-3B

.320

.207

.176

.171

.200

.097

.087

.181

.189

.181

1,670

.10

05…

.1640-36UNJF-3B

.340

.242

.202

.197

.220

.097

.087

.207

.220

.212

2,800

.17

08

.1640-32UNJC-3B

.340

.242

.202

.197

.240

.097

.087

.207

.220

.212

2,800

.17

3

.1900-32UNJF-3B

.363

.277

.228

.223

.243

.097

.087

.233

.251

.243

3,470

.24

4

.2500-28UNJF-3B

.460

.348

.288

.283

.280

.097

.087

.293

.313

.306

6,200

.47

5

.3125-24UNJF-3B

.560

.419

.352

.347

.340

.097

.087

.357

.376

.367

9,800

.78

6

.3750-24UNJF-3B

.660

.491

.417

.412

.355

.097

.087

.422

.439

.430

13,000

.93

7

.4375-20UNJF-3B

.760

.561

.484

.479

.400

.097

.087

.489

.502

.492

18,000

1.44

8

.5000-20UNJF-3B

.860

.631

.551

.546

.430

.097

.087

.556

.564

.553

24,000

1.94

9

.5625-18UNJF-3B

1.005

.700

.640

.635

.530

.115

.105

.645

.627

.616

33,000

3.08

10

.6250-18UNJF-3B

1.100

.846

.710

.705

.575

.115

.105

.715

.752

.741

43,000

5.00

12

.7500-16UNJF-3B

1.310

.987

.845

.840

.670

.125

.115

.850

.877

.865

61,000

7.88

14

.8750-14UNJF-3B

1.480

1.130

.985

.980

.770

.145

.135

.990

1.002

.990

73,900

11.45

1612

1.0000-12UNJF-3B

1.690

1.271

1.125

1.120

.870

.165

.155

1.130

1.127

1.115

85,700

16.00

K-FAST® SYSTEMS ENGINEERING
COMMITTEE

MATERIAL: NUT — ALLOY STEEL PER MIL-S-6049 (8740) , MIL-S-5000 (4340), OR MIL-S-5626 (4140).

WASHER — CARBON STEEL.

HEAT TREAT: NUT — Rc. 39 – 43 PER MIL-H-6875.

WASHER — Rc. 40 – 45.

FINISH: KFN542 – (*) — NUT AND WASHER — CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II,

CLASS 2.

(SEE NOTE 1 FOR FINISH ON -05 SIZE).

KFN542 – (*)CD – NUT AND WASHER — CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II,

CLASS 2, AND KAYLUBE MOLYBDENUM DISULFIDE DRY FILM LUBRICANT COATED PER MIL-L-8937.

20 PERFORMANCE: KFS 1009, EXCEPT AXIAL TENSILE AS NOTED.

TEMPERATURE: 450°F MAX.

PACKAGING: ADD “S” AFTER DASH NUMBER FOR SPINDLE PACKAGED NUTS FOR USE WITH K-FAST AUTOMATIC TOOL
(-05 THRU. -5 SIZES ONLY).

EXAMPLE: KFN542-45.

NOTES: ▲ 1. -05 SIZE
FINISH: CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II, CLASS 2, PLUS

OLIVE DRAB CHROMATE FINISH FOR IDENTIFICATION PURPOSES.

2. “C” AND “W” DIMENSIONS APPLY BEFORE FORMING SELF-LOCKING ACTION.

K.E.C.

K-FAST® ENGINEERING COMMITTEE

TITLE

PART NUMBER

800 SOUTH STATE COLLEGE BLVD.

NUT – 6 POINT, CAPTIVE WASHER

KFN542 – (*)

FULLERTON, CALIFORNIA 92631