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  1. Homepage
  2. METRIC
  3. Machine and fixture components
  4. Screws / nuts / washers
  5. Stainless steel cap nuts with collar and seal and shim washer for Hygienic USIT® set
    6. K1594.041
Designation
Cap nut
Version 1
with seal and washer
Version 2
Hygienic Usit®
Product type
nut with washer
Main material
stainless steel
Surface finish body
polished
Component material
75 EPDM 295
Component color
black
D=Thread
M4
SW=key width
7
Approval / Certification
EHEDG
D1
10,8
D2
9,7
D3
4,1
H
9
Kind of fastening
hex head
Packaging unit
komplet
R
0,45
S
1
Steel code
1.4404
T
4,8
~ Battery relevance?
no
~ CE relevance?
no
~ CP65 info warning required?
Yes
~ CP65 substance 2 CAS No.
7440-02-0
~ CP65 substance 2 cancer
nickel (metallic)
~ Conflict Minerals 3TG status
no intentional 3TG
~ Dual-Use No.
not listed
~ Magnet relevance?
no
~ PFAS free?
yes
~ REACH info SVHC-free?
yes
~ REACH version
04.02.2026 - 253 substances
~ RoHS conformity
yes, without exemption
~ RoHS version
2011/65/EU incl.2015/863/EU
~ Safety Data Sheet relevance?
no
~ TSCA 6(H) conformity
yes
~ TSCA version
10/2021
~ WEEE
no electrics

Description

Product description

Set: cap nut with collar K1493 + Hygienic USIT® seal and shim washer K1491.


Only the combination of a cap nut with collar and the Hygienic USIT® seal and shim washer assures a cavity-free seal.


The cap nut with collar for Hygienic USIT® seal and shim washers is ideal for fastening in sterile areas and also constyle to EHEDG regulations, which is confirmed with the relevant certificate.

Material

Cap nut: stainless steel 1.4404.

Washer: stainless steel 1.4404.

Seal ring:

70 EPDM 295 (black).

70 EPDM 253815 (white).

75 Fluoroprene® XP 45 (blue).

Version
Cap nut: polished.
Note

The EHEDG certificate is only valid when a combination of cap nut with collar K1493 and specially matched Hygienic USIT® seal and shim washer K1491 is used.

Attention

The function of the Hygienic USIT® screw connection system has been tested in combination with stainless steel materials and standard cleaning materials. The user must check that it is suitable for the application in question.

Accessory
Hexagon head screw with collar K1492.
Sockets with plastic inserts K1361.
Ring/open-end spanner with protective caps K1362.
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