Your basket is empty.
Browse & Search Products

Self-limiting bolt locking washers DIN 25201

Steel or stainless steel
Surface finish:
Galvanised steel, surface hardness 47 HRC ±5%. Stainless steel, surface hardness HV 350 ±5%
Sample order:
nlm 07310-0817261
The self-limiting bolt-locking washers guarantee that bolted joints exposed to transverse stresses, oscillations and vibration will be safe from loosening. A joint is also secure at low levels of tension. If the bolt (nut) tends to loosen independently in bolted joints under dynamic stress, the bolt (nut) carries its positive-locking washer with it, the sloped surfaces of which run directly up against the slpoed surfaces of the counter-washer. In other words, the nore a bolted joint "tries" to loosen itself, the more securely the wedge action of the washer blocks the attempt.

Supplied glued as a pair.


Product Selection

NameOrder No.PriceOrderDD1Sfor screwsfor screws “Surface finishPriceOrder
WASHER M307310-030718£0.54
73,41,8M31/8"standard type£0.54
WASHER M507310-050918£0.54
95,41,8M53/16"standard type£0.54
WASHER M607310-061118£0.61
10,86,51,8M61/4"standard type£0.61
WASHER M807310-081426£0.64
13,58,72,5M85/16"standard type£0.64
WASHER M1007310-101726£0.74
16,610,72,5M103/8"standard type£0.74
WASHER M1207310-122026£0.90
19,5132,5M121/2"standard type£0.90
WASHER M1607310-162537£1.35
25,4173,4M165/8"standard type£1.35
WASHER M1807310-182937£2.09
2919,53,4M1811/16"standard type£2.09
WASHER M2007310-203137£2.00
30,721,43,4M203/4"standard type£2.00
WASHER M3 SS07310-030722£1.33
73,42,2M31/8"standard type stainless steel£1.33
WASHER M5 SS07310-050922£1.33
95,42,2M53/16"standard type stainless steel£1.33
WASHER M6 SS07310-061122£1.49
10,86,52,2M61/4"standard type stainless steel£1.49
WASHER M8 SS07310-081422£1.60
13,58,72,2M85/16"standard type stainless steel£1.60
WASHER M10 SS07310-101722£1.90
16,610,72,2M103/8"standard type stainless steel£1.90
WASHER M12 SS07310-122022£3.29
19,5132,2M121/2"standard type stainless steel£3.29
WASHER M16 SS07310-162532£5.02
25,4173,2M165/8"standard type stainless steel£5.02
WASHER M18 SS07310-182932£6.95
2919,53,2M1811/16"standard type stainless steel£6.95
WASHER M2007310-203132£7.10
30,721,43,2M203/4"standard type stainless steel£7.10
WASHER M407310-040918£0.54
94,41,8M45/32"aggrandized support surface£0.54
WASHER M607310-061426£0.69
13,56,52,5M61/4"aggrandized support surface£0.69
WASHER M807310-0817261£0.82
16,68,72,5M85/16"aggrandized support surface£0.82
WASHER M1007310-1021261£0.98
2110,72,5M103/8"aggrandized support surface£0.98
WASHER M1207310-1225371£1.49
25,4133,4M121/2"aggrandized support surface£1.49
WASHER M1607310-1631371£2.16
30,7173,4M165/8"aggrandized support surface£2.16
WASHER M4 SS07310-040922£1.33
94,42,2M45/32"aggrandized support surface stainless steel£1.33
WASHER M6 SS07310-061422£1.66
13,56,52,2M61/4"aggrandized support surface stainless steel£1.66
WASHER M8 SS07310-081722£2.01
16,68,72,2M85/16"aggrandized support surface stainless steel£2.01
WASHER M12 SS07310-122532£6.30
25,4133,2M121/2"aggrandized support surface stainless steel£6.30
WASHER M16 SS07310-163132£6.95
30,7173,2M165/8"aggrandized support surface stainless steel£6.95

Technical Drawing

Request Information

If you would like to know more about this, or any of our products, please complete the form below or call on 01455 611116

Related Products

Unit 11 Sketchley Meadows, Sketchley Meadows Industrial Estate, Hinckley, Leicestershire, LE10 3EN