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TTBolt ASMEB18.21.1

ASME B18.21.1 Regular Spring-Lock Washer No.8 – Carbon Steel – Plain

Manufacturer: TTBOLT
SKU: TTB-ASMEB18.21.1-REG-NO.8-CS-PL
ASME B18.21.1 Regular Helical Spring-Lock Washer
Nominal size: No.8
Inside diameter: 0.167–0.174 in
Maximum outside diameter: 0.293 in
Minimum mean section thickness: 0.04 in
Minimum section width: 0.055 in
Minimum bearing width: 0.038 in
Material: Carbon Steel
Finish: Plain
Theoretical mass: 0.212 g/pc

ASME B18.21.1 Regular Spring-Lock Washer No.8 – Carbon Steel – Plain is an inch-series Regular Helical Spring-Lock Washer conforming to the dimensional requirements of ASME B18.21.1, Table 1. This exact catalog variant has nominal size No.8, material Carbon Steel, Regular series, and Plain finish.

Dimensions of this ASME B18.21.1 washer

Nominal washer sizeNo.8
Inside diameter0.167–0.174 in
Maximum outside diameter0.293 in
Minimum mean section thickness0.04 in
Minimum section width0.055 in
Minimum bearing width0.038 in
MaterialCarbon Steel
SeriesRegular
FinishPlain
Mass per piece0.212 g/pc

Engineering and ordering notes

Table dimensions are in inches and apply before coating. The word “lock” is the historical product-family name and does not guarantee permanent locking of a bolted joint. Confirm the required material grade, finish specification, coating thickness, joint preload, vibration conditions, and service environment before ordering. For electroplated carbon-steel washers, hydrogen-embrittlement relief and the required post-plating test must be specified and verified. The displayed mass is a theoretical estimate based on the tabulated section geometry; final manufactured mass may vary within dimensional and coating tolerances.

Technical drawing & data

Download technical PDF
Technical data sheet
TTBolt

Industrial Fasteners Engineering Data Sheet

Document
Technical Data Sheet
Standard
ASMEB18.21.1
Grade
Regular
Issued
2026-10-04

واشر فنری قفلی سری معمولی ASME B18.21.1 سایز No.8، فولاد کربنی، ساده

No.8 in | Regular | پوشش Plain

جدول ابعادی

پارامترنماد حداقلحداکثر / اسمی واحد
قطر اسمیd--in
قطر خارجیD-0.293in
قطر داخلیd10.1670.174in
ضخامتh0.04-in

مشخصات محصول

رزوهNo.8
جهت رزوهراست‌گرد
گریدRegular
پوششPlain
متریالCarbon Steel
فرم رزوهUnified 60 deg

یادداشت‌های فنی

1. تمام ابعاد بر حسب اینچ هستند مگر آنکه خلاف آن ذکر شده باشد.
2. تصاویر محصول از مدل Master در SolidWorks و با همان پارامترهای این ردیف تولید می‌شوند.
3. مقادیر حداقل و حداکثر از جدول ابعادی ASMEB18.21.1 گرفته شده‌اند؛ جایی که استاندارد تلرانس تعریف نکرده، تنها مقدار اسمی درج شده است.
4. وزن‌های درج‌شده در فروشگاه نظری‌اند و برای برآورد قیمت کاربرد دارند.

شماره قطعه
TTB-ASMEB18.21.1-REG-NO.8-CS-PL

ASMEB18.21.1TTB-ASMEB18.21.1-REG-NO.8-CS-PLttbolt.com

Regular Helical Spring-Lock Washer - ASMEB18.21.1

No.8 in | Regular | Plain Finish

DIMENSION TABLE

ParameterSymbol MinMax / Nominal Unit
Nominal diameterd--in
Outside diameterD-0.293in
Inside diameterd10.1670.174in
Thicknessh0.04-in

PRODUCT DATA

ThreadNo.8
Thread directionRight hand
GradeRegular
FinishPlain
MaterialCarbon Steel
Thread formUnified 60 deg

TECHNICAL NOTES

1. All dimensions are in inches unless stated otherwise.
2. Product views are generated from the SolidWorks master using the parameters of this row.
3. Minimum and maximum values are taken from the ASMEB18.21.1 dimension table; where the standard defines no tolerance, only the nominal value is shown.
4. Catalog weights are theoretical and intended for price estimation.

Part number
TTB-ASMEB18.21.1-REG-NO.8-CS-PL

ASMEB18.21.1TTB-ASMEB18.21.1-REG-NO.8-CS-PLttbolt.com

Products specifications

Attribute name Attribute value
Standard ASME B18.21.1
Product Type Regular Helical Spring-Lock Washer
Nominal Size No.8
Series Regular
Inner Diameter Range 0٫167–0٫174 in
Maximum Outer Diameter 0٫293 in
Minimum Mean Section Thickness 0٫04 in
Minimum Section Width 0٫055 in
Minimum Bearing Width 0٫038 in
Material Carbon Steel
Finish Plain
Unit System in
Estimated Weight 0٫212 g/pc