MIL-SPEC · Hardware > MIL-Spec Hardware
NAS1149C1690R
MIL/AN hardware: flat washer (NAS1149), size C1690R
Part NumberNAS1149C1690R
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN5310-00-167-0811 (NSN)
Federal Item NameWASHER,FLAT
MaterialSTEEL CORROSION RESISTING OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
Overall Diameter1.745 INCHES MINIMUM AND 1.770 INCHES MAXIMUM
Special FeaturesLIGHT
Hole Diameter1.005 INCHES MINIMUM AND 1.025 INCHES MAXIMUM
Surface TreatmentPASSIVATE OVERALL
Nondefinitive Spec Std DataA TYPE AND 2 GRADE AND B CLASS
Material Document And ClassificatiMIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-6721 MIL SPEC 3RD MA
Center Hole Shape StyleROUND
Cross Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Federal Supply Class5310 — Nuts And Washers
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is NAS1149C1690R in stock?
Yes — NAS1149C1690R is in our stock database. Request a quote for current pricing and lead time.
Is NAS1149C1690R by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If NAS1149C1690R has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like NAS1149C1690R?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for NAS1149C1690R?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.