Star washers

[cranetruck]

I'm looking for a few good washers (McMasters doesn't have them), hardened, cad plated, internal external tooth, for 1/4, 5/16 and 3/8 bolts.
Perhaps 25-50 of each size.
Anybody know a supplier?
Thanks

 

[ARMYMAN30YearsPlus]

Have you tried Fastenall? I get all my grade 8 from them they are a chain: We have a few stores nearby let me know if you need me to pick them up for you.

http://www.fastenal.com/web/products.ex?No=20&N=999600101&Nty=0

 

[doghead]

http://store.nutsandbolts.com/internal-external-lock-washers-auveco.html

 

[cranetruck]

Thanks fellows, both Fastenal and Nutsandbolts carry the plain zink coated carbon steel washers, same as McMasters.
I called Fastenal and was told that the cad plated mil-spec washers are available on special order only.
Still looking....

 

[Jetnoise400]

Hi Bjorn,

These places are both on the wrong side of the country from you, but I've had good success finding odd hardware at both of them:

Olander: http://www.olander.com/

Mr. Metric: http://www.mrmetric.com/

With all the defense electronic stuff out here in Sillycone Valley, there's a good chance they might have what you're looking for.

Good luck!

 

[clinto]

Have you tried Fastenall? I get all my grade 8 from them they are a chain: We have a few stores nearby let me know if you need me to pick them up for you.

http://www.fastenal.com/web/products.ex?No=20&N=999600101&Nty=0

The fastenal link has obviously changed, the only star washers I see on their site now are:

Lock Washers | Fastenal

RIP David..............................

OpenDNS

Link is no longer good. Appears the new link is:

Internal / External Lock Washers: Easy Online Shopping

These are zinc too, no cad plated ones shown.

Hi Bjorn,

These places are both on the wrong side of the country from you, but I've had good success finding odd hardware at both of them:

Olander: The Olander Company Inc: Best Distributor for Nitronic Fasteners in the Silicon Valley

Mr. Metric: http://www.mrmetric.com/

With all the defense electronic stuff out here in Sillycone Valley, there's a good chance they might have what you're looking for.

Good luck!

Olander's website SUCKS, it's an epic fail.

Mr Metric apparently doesn't exist anymore.

Thanks fellows, both Fastenal and Nutsandbolts carry the plain zink coated carbon steel washers, same as McMasters.
I called Fastenal and was told that the cad plated mil-spec washers are available on special order only.
Still looking....

So cranetruck, did you ever find a reasonable source for these? I am about to replace a rear harness and would like to use all new washers.

Gracias!

C

 

[gimpyrobb]

Clinto I have some if you can't find any.

 

[AceHigh]

How about stainless for 3 cents each?

Marsh Fasteners-Internal/External Star Lock Washers 410 SS

 

[steelandcanvas]

"Olander's website SUCKS, it's an epic fail."

You weren't kidding, I thought I'd try my luck there, did a search, and came up with a blank page. Not even a "unable to find" message. I'll ask some of my vendors at work, see if they can come up with something. Requests for these washers come up quite often.

 

[cranetruck]

Clinto, I was finally supplied by several goodhearted forum members, ACE and Will Wagner among others...

 

[clinto]

Clinto, I was finally supplied by several goodhearted forum members, ACE and Will Wagner among others...

So does that mean that the mil spec cad plated ones just don't exist, or they are financially prohibitive?

Can the zinc plated ones be used as a substitute for the cad plated units?

 

[cranetruck]

They need to be hardened to do the job. The plating is less important. Aircraft Spruce has some mil spec washers; Washers from Aircraft Spruce

 

[Bill W]

Don't know if ite been mentioned yet ( I didn't read all the replies ) but Tom at Snake River 4X4 carries the square washers also
Snake River 4X4

 

[gimpyrobb]

What size fastener are these needed for C?

 

[Lex_Ordo]

I have a source. I bought 1/4 and 3/8 from them. I don't have the info on 5/16, but I'm sure they can look up the p/n based on the below information.
Hope this helps. I bought 100 of each.

Starwares
2606-A Aviation Parkway
Grand Prairie, TX 75052
Tel. 972-641-2100

The corresponding part #'s are:
MS45904-68 1/4" internal/external tooth star lock-washer
MS45904-76 3/8" int/ext tooth lock washer

 

[clinto]

How about stainless for 3 cents each?

Marsh Fasteners-Internal/External Star Lock Washers 410 SS

They have internal and they have external, but not internal/external.

What size fastener are these needed for C?

I think having a selection of 1/4", 5/16", 3/8" and 1/2" would be sufficient. I use these for proper grounding on various electrical projects and I want to use the right stuff (cad plated, hardened, internal/external tooth, etc.).

The corresponding part #'s are:
MS45904-68 1/4" internal/external tooth star lock-washer
MS45904-76 3/8" int/ext tooth lock washer

I may create a thread later today based on this question, but since Lex was nice enough to provide these part #'s, I have a (few) question(s):

1. Is there a place where I can look up what an item is by part # or NSN? I never have any luck googling NSN/#'s and getting anything other than govt. contractor sites. I need somewhere that will actually say MS45904-76 is a 3/8" OD, internal/external tooth washer.

2. Does anyone know the #'s (preferably the MS #) for the 5/16" or 1/2" int/ext washers?

3. Can anyone identify the following MS #'s:

MS45904-60
MS45904-69
MS45904-72
MS45904-73
MS45904-77
MS45904-80
MS45904-84


Much thanks!

 

[moving chicane]

5310-00-080-9786 Characteristics Data

MRC	Criteria	Characteristic
MATT	MATERIAL	STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CQFM	HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYL	STYLE DESIGNATOR	106 FLAT EXTERNAL AND INTERNAL TEETH
AAUB	HOLE DIAMETER	0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM
ABKV	OUTSIDE DIAMETER	0.580 INCHES MINIMUM AND 0.610 INCHES MAXIMUM
ABPX	MATERIAL THICKNESS	0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM
SR-1	MANUFACTURERS CODE	96906
SR-1	DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS45904-60

5310-00-067-6357 Characteristics Data

MRC Criteria Characteristic MATT MATERIAL STEEL OVERALL SFTT SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL STYL STYLE DESIGNATOR 106 FLAT EXTERNAL AND INTERNAL TEETH AAUB HOLE DIAMETER 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM ABKV OUTSIDE DIAMETER 0.880 INCHES MINIMUM AND 0.900 INCHES MAXIMUM ABPX MATERIAL THICKNESS 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM ZZZT NONDEFINITIVE SPEC/STD DATA 3 TYPE AND 1 STYLE OR 2 STYLE AND 1 COMPOSITION SR-1 MANUFACTURERS CODE 81348 SR-1 NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FF-W-100 SR-1 MANUFACTURERS CODE 96906 SR-1 DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS45904-69 5310-00-889-2527 Characteristics Data MRC Criteria Characteristic MATT MATERIAL STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OVERALL MDCL MATERIAL DOCUMENT AND CLASSIFICATION 66 FED STD ALL MATERIAL RESPONSES OVERALL SFTT SURFACE TREATMENT CADMIUM AND CHROMATE OVERALL STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL CQFM HARDNESS RATING 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM STYL STYLE DESIGNATOR 106 FLAT EXTERNAL AND INTERNAL TEETH AAUB HOLE DIAMETER 0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM ABKV OUTSIDE DIAMETER 0.865 INCHES MINIMUM AND 0.900 INCHES MAXIMUM ABPX MATERIAL THICKNESS 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM ZZZT NONDEFINITIVE SPEC/STD DATA 3 TYPE AND 1 STYLE OR 2 STYLE AND 1 COMPOSITION SR-1 MANUFACTURERS CODE 81348 SR-1 NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FF-W-100 SR-1 MANUFACTURERS CODE 96906 SR-1 DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS45904-72

5310-00-728-2044 Characteristics Data
MRC	Criteria	Characteristic
MATT	MATERIAL	STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CQFM	HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYL	STYLE DESIGNATOR	106 FLAT EXTERNAL AND INTERNAL TEETH
AAUB	HOLE DIAMETER	0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM
ABKV	OUTSIDE DIAMETER	0.965 INCHES MINIMUM AND 0.985 INCHES MAXIMUM
ABPX	MATERIAL THICKNESS	0.037 INCHES MINIMUM AND 0.045 INCHES MAXIMUM
ZZZT	NONDEFINITIVE SPEC/STD DATA	3 TYPE AND 1 STYLE OR 2 STYLE AND 1 COMPOSITION
SR-1	MANUFACTURERS CODE	81348
SR-1	NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FF-W-100
SR-1	MANUFACTURERS CODE	96906
SR-1	DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS45904-73

5310-00-953-8628 Characteristics Data
MRC	Criteria	Characteristic
MATT	MATERIAL	STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
STDC	SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CQFM	HARDNESS RATING	40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYL	STYLE DESIGNATOR	106 FLAT EXTERNAL AND INTERNAL TEETH
AAUB	HOLE DIAMETER	0.383 INCHES MINIMUM AND 0.398 INCHES MAXIMUM
ABKV	OUTSIDE DIAMETER	1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM
ABPX	MATERIAL THICKNESS	0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
SR-1	MANUFACTURERS CODE	96906
SR-1	DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS45904-77

5310-00-080-9785 Characteristics Data
MRC	Criteria	Characteristic
MATT	MATERIAL	STEEL COMP 1050 OR STEEL COMP 1566 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	CADMIUM OR CHROMATE OVERALL
STYL	STYLE DESIGNATOR	106 FLAT EXTERNAL AND INTERNAL TEETH
AAUB	HOLE DIAMETER	0.448 INCHES MINIMUM AND 0.464 INCHES MAXIMUM
ABKV	OUTSIDE DIAMETER	1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM
ABPX	MATERIAL THICKNESS	0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
SR-1	MANUFACTURERS CODE	96906
SR-1	DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS45904-80

5310-00-935-8984 Characteristics Data
MRC	Criteria	Characteristic
MATT	MATERIAL	STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OVERALL
MDCL	MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
SFTT	SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
STYL	STYLE DESIGNATOR	106 FLAT EXTERNAL AND INTERNAL TEETH
AAUB	HOLE DIAMETER	0.512 INCHES MINIMUM AND 0.531 INCHES MAXIMUM
ABKV	OUTSIDE DIAMETER	1.220 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
ABPX	MATERIAL THICKNESS	0.047 INCHES MINIMUM AND 0.055 INCHES MAXIMUM
SR-1	MANUFACTURERS CODE	81348
SR-1	NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FFW100
SR-1	MANUFACTURERS CODE	96906
SR-1	DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS45904-84

 

[doghead]

"MS" = Mil Spec

Simply Google the MS number.

 

[Tow4]

Will these work?

Check McMaster-carr PN 95795A030. That get you to the right page to look at the sizes available. These are inside and outside tooth star washers with a minimum hardness of C40.

 

[clinto]

Here's an awesome sauce chart of everything you need from 3/16" to 1/2"

Man, that is awesome! Mucho thanks!

Where did you find that? Do you have access to the system or is that buried in a TM somewhere?

"MS" = Mil Spec

Simply Google the MS number.

I did-see "I never have any luck googling NSN/#'s and getting anything other than govt. contractor sites."

Whenever I try to identify either MS or NSN #'s, all I can find are contractor sites that show they can order them and occassionally what they cost and that's it-there is never a description of the item.

I research car parts for a living-and I've done it for a while. I am not bad at it. In fact, I am pretty good. But I've had no luck finding a way to identify a lot of this stuff. If I am missing something obvious, show me and I'll take my ribbing.

For instance, the 1/2" one:http://bit.ly/11saw6A

Of ALL the first page results, only wbparts.com and parttarget.com had any specs (and I must have missed them before, or I searched a different # that they didn't have).

There has to be some kind of central place to research this stuff.

Will these work?

Check McMaster-carr PN 95795A030. That get you to the right page to look at the sizes available. These are inside and outside tooth star washers with a minimum hardness of C40.

Other than those being zinc plated and me being after cadmium plated, they would work. I am being real picky about what I want, since it's going on this:

I don't have the info on 5/16, but I'm sure they can look up the p/n based on the below information.

Due to moving chicane's help, here are the remainder of the part #'s for those interested. All sizes represent inner diameter:

MS45904-60 3/16"
MS45904-69 1/4"
MS45904-72 5/16"
MS45904-73 5/16" ID with a larger OD
MS45904-77 3/8"
MS45904-80 7/16"
MS45904-84 1/2"


Much thanks to everyone for their help!

C