PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2127Guide,valve Stem

Niantic Tool, Inc. Dba Niantic Tool Co · NSN 4820-01-282-8634 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-282-8634 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-282-8634. Primary manufacturer part number: B2127.
Features
  • Guide,valve Stem — FSC 4820
  • Outside Diameter: 1.375 INCHES NOMINAL IN
  • 10 verified cross-references
  • Primary manufacturer: Niantic Tool, Inc. Dba Niantic Tool Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Guide,valve Stem, cataloged under National Stock Number 4820-01-282-8634, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Niantic Tool, Inc. Dba Niantic Tool Co. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-282-8634
Primary Part NumberB2127
Item NameGuide,valve Stem
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNiantic Tool, Inc. Dba Niantic Tool Co
StatusACTIVE
Outside Diameter1.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-237-6134300-011 INTERCHANGEABLE
Packing,preformed
Bal Seal Engineering, Inc.
2530-00-391-4365FD9336 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5977-00-471-340902261-0158-32 INTERCHANGEABLE
Holder,electrical Contact Brush
Asrc Federal Facilities Logistics, Llc
5340-00-629-444330-001-1 INTERCHANGEABLE
Clevis,rod End
Textron Systems Corporation Dba Textron Systems Corp
5910-01-028-5698 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
5365-01-044-905530001-1 INTERCHANGEABLE
Shim
Saginaw Products Corporation Dba Cignys
5360-01-062-67121466270004 INTERCHANGEABLE
Spring,helical,compression
Parker-Hannifin Corporation Div Hydraulic Accumulator Division
1730-01-079-2080 INTERCHANGEABLE
Heater Element
1720-01-116-85493-0001-1 INTERCHANGEABLE
Parts Kit,holdback
Triumph Actuation Systems - Yakima, Llc Dba Triumph Actuation Systems - Yakima Llc
4330-01-216-19473000-11 INTERCHANGEABLE
Parts Kit,fluid Pressure Filter
Norgren C a Co
Cross-Reference Index
Part NumberManufacturer
G-2870 365158 Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
B2127 PRIMARY Niantic Tool, Inc. Dba Niantic Tool Co (USA)
365158 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
365158 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
G-2870 365158 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
G-2870 365158 Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand (USA)
G-2870 365158 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
300011 PRIMARY Niantic Tool, Inc. Dba Niantic Tool Co (USA)
365158 PRIMARY Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
365158 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
Related Parts
5330-00-237-6134INTERCHANGEABLE
PACKING,PREFORMED
300-011
2530-00-391-4365INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
FD9336
5977-00-471-3409INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
02261-0158-32
5340-00-629-4443INTERCHANGEABLE
CLEVIS,ROD END
30-001-1
5910-01-028-5698INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
5365-01-044-9055INTERCHANGEABLE
SHIM
30001-1
5360-01-062-6712INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1466270004
1730-01-079-2080INTERCHANGEABLE
HEATER ELEMENT
1720-01-116-8549INTERCHANGEABLE
PARTS KIT,HOLDBACK
3-0001-1
4330-01-216-1947INTERCHANGEABLE
PARTS KIT,FLUID PRESSURE FILTER
3000-11
6520-01-224-9677INTERCHANGEABLE
WHEEL,ABRASIVE
0011
2540-01-277-3433INTERCHANGEABLE
TRACK,SEAT,ADJUSTABLE
101251PS

Frequently Asked Questions

What is NSN 4820-01-282-8634?

NSN 4820-01-282-8634 is a Guide,valve Stem, manufactured by Niantic Tool, Inc. Dba Niantic Tool Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-282-8634?

NSN 4820-01-282-8634 has 10 cross-referenced part numbers: G-2870 365158 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), B2127 (Niantic Tool, Inc. Dba Niantic Tool Co), 365158 (Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand), 365158 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), G-2870 365158 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions) and 5 more.

What NSN replaces 4820-01-282-8634?

There are 12 known substitutes for 4820-01-282-8634: 5330-00-237-6134, 2530-00-391-4365, 5977-00-471-3409 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B2127?

Key specifications for B2127: Outside Diameter: 1.375 INCHES NOMINAL IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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