8440B Keystone Electronics, 8440B Datasheet - Page 4
![Threaded Standoff, Hexagonal, Nylon, UL94-V2, Flame Retardent, 0.250 Inch Outside Diameter, 0.375 Inch Length, 4-40 Thread](/photos/6/29/62929/8440b_sml.jpg)
8440B
Manufacturer Part Number
8440B
Description
Threaded Standoff, Hexagonal, Nylon, UL94-V2, Flame Retardent, 0.250 Inch Outside Diameter, 0.375 Inch Length, 4-40 Thread
Manufacturer
Keystone Electronics
Type
Hex Threaded, Female/Femaler
Specifications of 8440B
Size
0.250" (6.35mm) 1/4" Hex
Thread/screw/hole Size
4-40 Thread
Length - Overall
0.375" (9.53mm) 3/8"
Color
Natural
Between Board Height
0.375" (9.53mm) 3/8"
Length
0.375 in
Outside Diameter
0.25 in
Thread Size
4-40
Features
ASTM-B16, (QQ-N-290)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Plating
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
8440BK
* Internal Thread: 8.0mm deep
Note: Female standoffs longer than 19mm are tapped from both ends
STAINLESS BRASS ALUMINUM
Stainless: ASTM A581/A582
CAT. NO. CAT. NO.
24289
24290
24291
24292
24293
24294
24283
24284
24285
24286
24287
24288
24295
24296
24297
24298
24299
24300
24301
24302
24303
24304
24305
24306
—
—
—
—
—
—
—
—
—
—
—
—
**
*
MALE/FEMALE
TL
L
MALE/FEMALE
A
Tel (718) 956-8900
24307
24308
24309
24310
24311
24312
24313
24314
24315
24316
24317
24318
24319
24320
24321
24322
24323
24324
24325
24326
24327
24328
24329
24330
—
—
—
—
—
—
—
—
—
—
—
—
(800) 221-5510
METRIC STANDOFFS
**
*
THREAD
CAT. NO.
24337
24338
24339
24340
24341
24342
24343
24344
24345
24346
24347
24348
24349
24350
24351
24352
24353
24354
4.5 HEX DIA. (M2.5 THREAD)
24331
24332
24333
24334
24335
24336
6.0 HEX DIA. (M4 THREAD)
5.0 HEX DIA. (M3 THREAD)
5.5 HEX DIA. (M3 THREAD)
—
—
—
—
—
—
—
—
—
—
—
—
** Internal Thread: 6.0mm deep
THREAD
SIZE
M2.5
M3
M4
•
•
Brass: ASTM-B16
Plating: Nickel
(QQ-N-290)
**
*
CHOICE OF:
Fax (718) 956-9040
kec@keyelco.com
10.0
12.0
15.0
18.0
20.0
25.0
12.0
20.0
25.0
12.0
20.0
25.0
10.0
15.0
18.0
12.0
20.0
25.0
10.0
15.0
18.0
10.0
15.0
18.0
5.0
6.0
8.0
5.0
6.0
8.0
5.0
6.0
8.0
5.0
6.0
8.0
L
10.0 11.0
TL
4.0
8.0
STAINLESS BRASS ALUMINUM
CAT. NO. CAT. NO.
24483
24484
24485
24486
24487
24488
24460
24461
24462
24463
24464
24465
24466
24467
24468
24470
244 7 1
24472
24473
24474
24475
24476
24477
24478
24480
24481
24482
24490
24491
24492
24493
24494
24495
24496
24497
24498
5.0
8.0
A
Aluminum: ASTM B211
Plating: Clear Iridite
(Mil-C-5541)
L
FEMALE
24390
24391
24392
24393
24394
24395
24396
24397
24398
24400
24401
24402
24403
24404
24405
24406
24407
24408
FEMALE
24380
24381
24382
24383
24384
24385
24386
24387
24388
24410
24411
24412
24413
24414
24415
24416
24417
24418
RoHS COMPLIANT
CAT. NO.
24430
24431
24432
24433
24434
24435
24436
24437
24438
24440
24441
24442
24443
24444
24445
24446
24447
24448
24450
24451
24452
24453
24454
24455
24456
24457
24458
24420
24421
24422
24423
24424
24425
24426
24427
24428
~
ISO 9001 CERTIFIED
Material:
THREAD
METRIC NYLON LOCK-IN SUPPORT
MALE/FEMALE
•
THREAD
One end locks into chassis, the other end locks into the PC Board.
HEX
Nylon 6/6, UL Rated 94V-0
METRIC NYLON STANDOFFS
®
Choice of:
A
A
L
3,18
4,83
L
METRIC SCREWS
Material:
Steel, Zinc Plate
L
MALE/FEMALE
Note: Female standoffs longer than
19mm are tapped from both ends
31-07 20th Road – Astoria, NY 11105-2017
CAT. NO.
25501
25502
25503
25504
25505
25506
25521
25522
25523
25524
25525
25526
5.0 HEX (M3 THREAD)
6.0 HEX (M4 THREAD)
—
—
—
—
FOR 4,00 DIA.
MOUNTING HOLE
THREAD
Nylon: 6/6, UL Rated 94V-2
FOR 4,00 DIA.
MOUNTING HOLE
SIZE
M3
M4
www.keyelco.com
THICK PCB
FOR 1,57
CHASSIS
FOR 1,57
•
12.0
20.0
25.0
12.0
20.0
25.0
10.0
15.0
18.0
10.0
15.0
18.0
THREAD
L
6.0
8.0
6.0
8.0
Nylon: 6/6, UL Rated 94V-2
8.0
9.5
A
CAT. NO.
FEMALE
25508
25509
25510
25511
25512
25513
25514
25515
25528
25529
25530
25531
25532
25533
25534
25535
6,00
CAT. NO.
29301
29304 12.00
29306 16.00
29311
29314 12.00
29316 16.00
29318 25.00
29321
29324 12.00
29326 16.00
29328 25.00
STEEL
M2.5 THREAD
M3 THREAD
M4 THREAD
CAT. NO. L DIM
8843
8844
8845
8846
8847
8848
8849
8850
8851
6.00
6.00
6.00
L
THREAD
NYLON 6/6
FEMALE
HEX
CAT. NO.
29331
29334
29336
29341
29344
29346
29348
29351
29354
29356
29358
12.0
14.0
10.0
16.0
18.0
3.0
4.0
6.0
8.0
L
67