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STP31A0400250S
Screw for Plastic
STP31A 4.0x25.0 - H2
steel, hardened
zinc-plated 5-7 µm, baked, blue / transparent passivated

identical to WN1411 / KN1031
similar to WN1441
Item Number STP31A0400250S
Standard KN1031
Material steel, hardened
Surface zinc-plated 5-7 µm, baked, blue / transparent passivated
Thread Outside-Ø d1 4.00+0.18 mm
Thread Core-Ø d2 2.17 mm
Thread Pitch p 1.79 mm
Length L 25.00±0.65 mm
Head-Ø D 8.00-0.36 mm
Head Height K 2.500±0.125 mm
Flange Thickness S 0.90 mm
Thread Run-Out X 2.00 mm
Radius R 0.40 mm
Size Cross Recess H2
Penetration Depth t 1.33 - 1.96 mm
Thread STS
Weight 1.700 kg / 1000 pieces
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local stock 6,500 pcs.
remote stock (10 working day(s) transfer time) 81,160 pcs.
Quantity pcs.
Unit Price from 0.03540 $
excl. shipping and tax
Quantity discounts
Quantity Price each
from 1 $ 1.37000
from 10 $ 0.69000
from 20 $ 0.56000
from 50 $ 0.43000
from 100 $ 0.35100
from 200 $ 0.28800
from 300 $ 0.25700
from 400 $ 0.23700
from 500 $ 0.22300
from 1,000 $ 0.18500
from 2,000 $ 0.14400
from 3,000 $ 0.12600
from 4,000 $ 0.11400
from 5,000 $ 0.10600
from 6,000 $ 0.10000
from 7,000 $ 0.09520
from 8,000 $ 0.09130
from 9,000 $ 0.08810
from 10,000 $ 0.08530
from 11,000 $ 0.08170
from 12,000 $ 0.07830
from 13,000 $ 0.07510
from 14,000 $ 0.07210
from 15,000 $ 0.06920
from 16,000 $ 0.06660
from 17,000 $ 0.06400
from 18,000 $ 0.06170
from 19,000 $ 0.05940
from 20,000 $ 0.05730
from 22,000 $ 0.05460
from 24,000 $ 0.05240
from 26,000 $ 0.05040
from 28,000 $ 0.04870
from 30,000 $ 0.04720
from 32,000 $ 0.04590
from 34,000 $ 0.04480
from 36,000 $ 0.04370
from 38,000 $ 0.04280
from 40,000 $ 0.04210
from 95,000 $ 0.04140
from 100,000 $ 0.04080
from 110,000 $ 0.04020
from 120,000 $ 0.03930
from 130,000 $ 0.03850
from 140,000 $ 0.03790
from 150,000 $ 0.03730
from 160,000 $ 0.03680
from 170,000 $ 0.03640
from 180,000 $ 0.03600
from 190,000 $ 0.03570
from 200,000 $ 0.03540
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Erik Braam
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