KFN305

K-FAST® SYSTEMS ENGINEERING
COMMITTEE

K-FAST IS REGISTERED TRADE MARK OF

KAYNAR, A MICRODOT COMPANY LICENSEES:

DEUTSCH FASTENER CORPORATION VOI-SHAN/A DIVISION OF VSI CORP.

SPS TECHNOLOGIES INCORPORATED

14

K.E.C.

K-FAST® ENGINEERING COMMITTEE

TITLE

PART NUMBER

800 SOUTH STATE COLLEGE BLVD.

NUT – K-FAST, 6 POINT

KFN305-(*)

FULLERTON, CALIFORNIA 92631

DEEP C’BORE, 160 KSI

KAYLOCK PART NO

THREADS PER MIL-S-8879

A

MAX

B

MIN

C

MIN

D

H

MAX

M

W

Y

·

AXIAL TENSILE STRENGTH LBS MIN

REC’M SEATING TORQUE IN-LBS

APPROX WEIGHT LBS/100

KFN305-

08

.1640-32UNJC-3B

.290

.273

.242

.202

.198

.270

.112

.102

.220

.212

.005

2,300

30-40

.15

3

.1900-32UNJF-3B

.330

.295

.277

.228

.224

.280

.112

.102

.251

.243

.005

2,750

40-50

.21

4

.2500-28UNJF-3B

.425

.398

.348

.288

.284

.340

.117

.107

.313

.305

.005

5,000

110-130

.41

5

.3125-24UNJF-3B

.525

.497

.419

.350

.346

.430

.127

.117

.376

.367

.005

8,300

200-250

.68

6

.3750-24UNJF-3B

.605

.577

.491

.413

.409

.470

.127

.117

.439

.430

.006

11,900

360-420

.96

7

.4375-20UNJF-3B

.725

.677

.561

.476

.472

.565

.142

.132

.502

.492

.006

19,00

600-675

1.52

8

.5000-20UNJF-3B

.825

.777

.631

.538

.534

.615

.142

.132

.564

.553

.006

25,500

900-1000

2.13

9

.5625-18UNJF-3B

.902

.862

.702

.601

.597

.661

.142

.132

.627

.616

.008

29,000

1075-1150

2.90

10

.6250-18UNJF-3B

1.043

1.003

.843

.663

.659

.726

.142

.132

.752

.741

.008

32,000

1400-1550

5.27

KAYLOCK PART NO

THREADS PER MIL-S-8879

A

MAX

B

MIN

C

MIN

D

H

MAX

M

W

Y

·

AXIAL TENSILE STRENGTH LBS MIN

REC’M SEATING TORQUE IN-LBS

APPROX WEIGHT LBS/100

KFN305-

08

.1640-32UNJC-3B

.290

.273

.242

.202

.198

.270

.112

.102

.220

.212

.005

2,300

30-40

.15

3

.1900-32UNJF-3B

.330

.295

.277

.228

.224

.280

.112

.102

.251

.243

.005

2,750

40-50

.21

4

.2500-28UNJF-3B

.425

.398

.348

.288

.284

.340

.117

.107

.313

.305

.005

5,000

110-130

.41

5

.3125-24UNJF-3B

.525

.497

.419

.350

.346

.430

.127

.117

.376

.367

.005

8,300

200-250

.68

6

.3750-24UNJF-3B

.605

.577

.491

.413

.409

.470

.127

.117

.439

.430

.006

11,900

360-420

.96

7

.4375-20UNJF-3B

.725

.677

.561

.476

.472

.565

.142

.132

.502

.492

.006

19,00

600-675

1.52

8

.5000-20UNJF-3B

.825

.777

.631

.538

.534

.615

.142

.132

.564

.553

.006

25,500

900-1000

2.13

9

.5625-18UNJF-3B

.902

.862

.702

.601

.597

.661

.142

.132

.627

.616

.008

29,000

1075-1150

2.90

10

.6250-18UNJF-3B

1.043

1.003

.843

.663

.659

.726

.142

.132

.752

.741

.008

32,000

1400-1550

5.27

K-FAST® SYSTEMS ENGINEERING
COMMITTEE

K-FAST IS A REGISTERED TRADE MARK OF KAYNAR, A MICRODOT COMPANY LICENSEES:

DEUTSCH FASTENER CORPORATION VOI-SHAN/A DIVISION OF VSI CORP.

1 2 SPS TECHNOLOGIES
INCORPORATED

MATERIAL: 304 CORROSION RESISTANT STEEL PER AMS 5697A, OR AMS 5639, OR 305 CORROSION RESISTANT
STEEL PER AMS 5686.

FINISH: KFN305C(*) — CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II, CLASS 3, AND

CETYL ALCOHOL LUBRICANT.

KFN305CD(*) — CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II, CLASS 2, AND

KAYLUBE MOLYBDENUM DISULFIDE DRY LUBRICANT COATED PER MIL-L-8937 OR MIL-L-46010.

KFN305DL(*) — KAYLUBE MOLYBDENUM DISULFIDE DRY LUBRICANT COATED PER MIL-L-8937, OR MIL-L-46010.

KFN305E(*) — SILVER PLATED PER AMS 2410, AND CETYL ALCOHOL LUBRICANT. KFN305J(*) — SILVER PLATED
PER AMS 2410.

KFN305PK(*) — CADMIUM PLATED PER FED. SPEC. QQ-P-416, TYPE II, CLASS 2, OLIVE COLOR, AND CETYL
ALCOHOL LUBRICANT.

PERFORMANCE: LOCKING TORQUE PER MIL-N-25027, EXCEPT AS FOLLOWS:

1. REUSABILITY 5 CYCLES REQUIRED.

2. AXIAL TENSILE STRENGTH OBTAINED WHEN
   TESTED ON 180 KSI MIN BOLTS.

1 2 TEMPERATURE: “C”, “CD”, “DL”, “K”, AND
“PK” CODES — 450°F MAX.

“E”, AND “J” CODES — 750° MAX.

APPLICATION: FOR USE ON STANDARD TO .032 OVERSIZE SHANK BOLTS.

PACKAGING: PARTS ARE NORMALLY SUPPLIED IN BULK PACKAGING.

ADD “S” AFTER DASH NUMBER FOR SPINDLE PACKAGED NUTS FOR USE WITH STANDARD K-FAST AUTOMATIC TOOLS,
OR “SS” FOR PARTS PACKAGED ON “SHORT SPINDLES” FOR USE ON LIGHTWEIGHT K-FAST AUTOMATIC TOOLS.

EXAMPLE OF PART NO.: KFN305C4S OR KFN305C4SS SPINDLE PACKAGED PARTS APPLY THRU -5 NUTS ONLY.

NOTES: 1. “D” DIAMETER CONCENTRIC TO THREAD PITCH DIAMETER WITHIN “Y” TIR VALUES.

K.E.C.

K-FAST® ENGINEERING COMMITTEE

TITLE

PART NUMBER

800 SOUTH STATE COLLEGE BLVD.

NUT – K-FAST, 6 POINT

KFN305-(*)

FULLERTON, CALIFORNIA 92631

DEEP C’BORE, 160 KSI